Sonic vs. Shadow Boss Breakdown: A Case Study

It’s April 2022, I just came back from the movies, and it’s got me in a Sonic mood. Sonic Adventure 2 was Sonic’s second major 3D outing and personal favorite of mine, warts and all. The big gimmick of this game was ‘hero versus dark’, or in other words two concurrent stories centering on our familiar heroic blue hedgehog Sonic, and the new dastardly red and black hedgehog Shadow, who has all the same powers that Sonic has!

The Sonic and Shadow showdown that’s built up across the game’s story was always a highlight for me as a child. It’s aesthetically and narratively well-realized, a great moment of tension and catharsis for one invested in the wacky world of Sonic. So it works on a number of levels. Taking an older and more analytical eye to it though, it is far from an ideal example of boss design in motion. Like much of Sonic Adventure 2, it has its share of flaws. So for this boss breakdown, I’m going to approach things a little differently, and go through an alternating list of the boss design’s pros and cons, trying to glean where this boss succeeds and where it falls short.

Sonic the Hedgehog stands in a long starship-like hallway. He is surprised when Shadow the Hedgehog walks up from behind him and begins to speak "You never cease to surprise me blue hedgehog. I thought that the capsule you were in exploded in space." 

Sonic replies, "You know, what can I say... I die hard!"
The motion-captured cut scene animations are still pretty comically bad, though.

First, a quick overview. The player takes the role of Sonic or Shadow, depending on which story path they chose. Their opponent is whatever hedgehog they’re opposed to. In either case, the fight is identical, as both characters share identical movesets as players and as AI bosses. The two hedgehogs run along an infinitely long looping pathway suspended in outer space. Pieces of it fall out from under them if they run too slowly. If the enemy boss hedgehog falls off the path, they teleport back to the stage ahead of the player’s position. If the player does the same, they fall to their death. The enemy will occasionally use a homing attack on the player, which can be deflected by jumping, which produces a protective spin-shield on the hedgehog. The enemy can do the same, however, meaning most homing attacks will be deflected unless the player can make an opening in the enemy’s defenses.

These openings, as far as I can tell, take three forms. First, if the player lags behind the enemy by too great a distance, the enemy will come to a halt, and launch a screen-wide super attack, which can be avoided with a well timed jump. During this moment, the enemy is vulnerable to attack. Second, if the player runs too far ahead, or the enemy falls off of the arena, they teleport back onto the road ahead of the player, after which they are vulnerable for a brief moment, although this window of vulnerable seems to narrow as the boss’s health gets lower. Finally, timing an attack such that it hits the boss in the short window of time they are on the ground after landing from a jump, they are vulnerable.

With that out of the way, let’s get to some of the particulars.

Pro: We Framed The Camera

So Sonic Adventure 2 (and a lot of 3D Sonic games of this era for that matter) has a bit of a reputation with its camera. So this one might come off as somewhat of a backhanded compliment, haha. To be fair, I think the direness of the state of SA2‘s camera is often vastly overstated, when compared to other 3D cameras of the time, or even other Sonic games. Point is, sharp turns and elaborate level geometry could be let’s say… challenging for the hard working early 2000’s 3D camera, so Sonic Team played to their tech’s limitations and its strengths and placed this boss fight on a seamless, infinitely long straightaway.

With no turns, nor obstructions, the player always has a clear view of the action and the goal- defeating that enemy hedgehog. This has the added bonus of creating a series of dynamic set pieces visually between Sonic and Shadow’s fight, with the camera being centered on the highway path.

Sonic the Hedgehog outruns Shadow. A moment later, Shadow teleports in front of Sonic in a flash of green light.
Nothing but you, me, and the cinematic cameraman following behind us

Con: Rings, Rings Everywhere

Someone once did a write up on Sonic The Hedgehog’s traditional health system that utilizes its collectible coins. This system has a lot of flaws, in my eyes. The simple version is, that because having even one ring on Sonic has nearly as much advantage as having a billion rings, while having zero rings leaves Sonic in a drastically more vulnerable state, it is very difficult to build a consistent level of challenge with this health system. The battle between Sonic and Shadow takes place on an infinitely long looping pathway. It would be very possible, even likely, that most players upon taking a hit from Shadow or Sonic simply kept running, missed picking up their rings, and were left with a crushingly difficult unreasonable encounter.

This is obviously not desirable in a game marketed to children, and so to counter this eventuality, it was decided that the infinite path contain infinite rings. This is also a problem. So long as you keep collecting these readily available, plentiful rings, it is essentially impossible to lose this boss fight that is an alleged death battle between super powered titans. It doesn’t matter how many times Shadow strikes Sonic with a chaos spear, or how often Sonic homing attacks Shadow. If the player can collect more rings, and they can, they’re in no danger. It kind of takes the wind out of the tension-sails when you realize this.

Pro: The Game Does Not Tell You What To Do

There’s a certain appeal to to the idea of just being placed in an arena with a hostile opponent and… going at it. No rules, no holds barred, no ifs ands or buts. Of course, there are rules, such boss designs simply give the impression that the player can control the pacing of the fight, and can achieve progress against the opponent with mechanisms entirely driven by their own ability, not by arbitrary timers or enemy behavior tables. Someone once did a write up on the subject using The Legend of Zelda as an example.

When fighting Sonic or Shadow it is not initially entirely clear how one is meant to deal damage to them. They have a health bar indicating damaging them is the goal, but not much else. There’s very little indication of the boss’s weakness. The player’s standard methods of attack up to this point, homing attacks or the spin dash, have no effect in most situations. For a final confrontation, this makes sense. Shadow and/or Sonic stand as an imposing ultimate challenge with no clear exploitable point. It’s up to the player to decide how best to approach the enemy supersonic hedgehog, as their opponent has all manner of ways to deflect incoming attacks, such as rolling into a ball, homing-attack the player in retaliation, or using one of their screen-wide super attacks. This bare-knuckle brawl kind of boss design works well in establishing the tone of two co-equal rivals finally duking it out and giving it their all. If Shadow or Sonic had a big glowing ‘attack this to kill me’ button somewhere it would certainly diminish the effect.

It’s also worth mentioning, this is the second such encounter between Sonic and Shadow. The first, in an enclosed square arena, is a lot less exciting to play and talk about. I bring it up because it does begin to engender some of the concepts of how to fight the enemy hedgehog that you see here, but that fight also suffers from not being entirely clear on its mechanics, so the player will likely not have learned a definitive approach to fighting Sonic or Shadow by this point.

Sonic the Hedgehog repeatedly homes in on Shadow the hedgehog, but Shadow rolls up in midair to protect himself, deflecting the attacks.
Standard methods of attack don’t work. Figure out a way past his defenses!

Con: The Game Does Not Tell You What The Heck To Do

Yeah okay, so there are advantages to unstructured boss fights, but Shadow and Sonic’s weakness does exist, and it is largely arbitrary. The game gives little to no indication at all how best to damage the boss, and as a result, even for players who’ve defeated this boss before, it may not be entirely clear how they did it, and reproducing those results may require a lot of fiddling around with the boss’s behaviors. There is a method to consistently damaging Shadow or Sonic in this encounter, but to get there you really have to do some meandering experimentation. The investigative nature of this isn’t without its fun but it does feel kind of weird and incongruous, like a puzzle whose pieces fit together, but do not form a picture of anything.

Why is it, for example, that Shadow will only use his super move ‘chaos spear’ when Sonic has let him run far ahead down the path? Why does he stop dead in his tracks when chaos spear is used, leaving him vulnerable? This might have made a lot more sense if Shadow had a special animation to indicate he had to slow down to concentrate when using chaos spear, which would also explain his vulnerability and why he’d wait until he got some distance from Sonic before using it, but the player is left to essentially fill in these blanks themselves. Given the loose, fiddly nature of the boss’s behaviors, it’s also very possible to simply mash buttons and attacks against them until the encounter is won. Combined with the ring systems, there’s really no way to enforce a failure state to dissuade this, which in my eyes is an issue. The player should feel like they accomplished something even it’s an easy, so the possibility of a largely accidental victory is undesirable.

Sonic the Hedgehog and Shadow the Hedgehog repeatedly roll up into balls and bounce against each other, until Sonic lands on shadow's head and he dies
I can barely tell what happened here, and this is my gameplay footage

Pro: Forward Momentum

Sonic’s the name and, you may have heard, speed’s his game. If that’s the case it’s kind of wild that a ton of Sonic boss battles have nothing to do with the aforementioned. The premise of Shadow the hedgehog as a character is that he’s a dark mirror to Sonic the hedgehog, capable of all the same feats of speed and agility. Since that’s the big selling point here, we want our boss fight to illustrate that, thus the long straightaway.

Infinitely looping paths along which to run whilst fighting a boss would eventually become a halmark of the Sonic the Hedgehog franchise. It was actually kind of a rarity at the time of Sonic Adventure 2, though. The advantages are obvious. With an unobstructed pathway Sonic is free to run at full blast, the most fun thing to do in a Sonic game, while Shadow matches the speed, and the spectacle of a high-speed superpowered battled is nearly realized right there. Bits of the looping pathway collapse, leisurely, as they are cycled off-screen, gently encouraging the player to not stop running, keeping the pace of the fight breezy. It all works very well to construct the scenario they were going for.

Sonic Adventure 2 also iterated on the lightspeed dash, in which Sonic can quickly move across a path of rings with a well-timed button press, which gives an excellent and rewarding avenue for expressing player skill. Stringing together dashes along the many paths of rings is a blast.

Sonic zips across a series of paths made of gold rings at incredible speeds.
God I love this game

Con: The Enemy Is Not Proactive

I did praise this boss for being rather player-driven, allowing the player to decide the pace of the fight. However, the fact that the boss will do very little to actually attack you is a major problem for me. Shadow and Sonic are in a dire situation involving the fate of the earth and an orbital laser beam capable of blowing up half the moon. Things need to be tense, and the danger needs to run high. The hedgehog being controlled by the AI, though, just doesn’t feel especially desperate to kill the player. They will happily run alongside you, but never really do much to harm you unless you position yourself in a specifically vulnerable spot. The enemy homing attack is especially easy to deflect. If you run too far behind they’ll do that super attack I mentioned earlier. I feel as though a lot more could’ve been done to establish that the boss is very motivated to defeat you, and I would’ve included some more regular attacks and obstacles that the player has to maneuver to keep up. A lot of what makes running fast in Sonic, after all, is the satisfaction of skillful execution in avoiding hazards.

Pro: Timing and Execution

As unclear as the ‘rules’ of the boss’s behavior are, they do exist, and executing on them can be a lot of fun once you understand them. One of my favorite strategies for damaging the boss is to hang back, causing them to use their screen-wide super, then rush ahead and use the ring-dash to dash straight through the vulnerable enemy. These interactions are actually very compelling, requiring a reasonable bit of skill and control to execute on. It’s actually so fun to land hits on the enemy hedgehog once you understand what is actually going on in their behavior table, that it makes it even more frustrating that a lot of this is not clearly communicated.

Shadow the hedgehog stops running for a moment to shoot orange energy projectiles at Sonic, but Sonic dodges them and homes in on Shadow to damage him.
Baiting the enemy into an attack and retaliating does feel pretty good.

Pro Again: Aesthetics

Alright this article has been pretty critical of my blood brother Sonic Adventure 2, so I’ll end with one last pro that’s less to do with the gameplay design, but still an essential feature. If you didn’t know, aesthetics deal with all the principles of beauty, not just visuals. It’s an overall feel. A style, if you will. And man, does this game have style coming out of its comically large cartoon hedgehog ears. Shadow and Sonic are under-lit with an eerie green light that accentuates the alien environment and makes Shadow look positively menacing. The techno-electronic music blares with strange bell samples with some of the edgiest lyrics you’ve ever heard in your life. You can see the earth frames against the black sky. Meteorites and pieces of the space colony zip by as you run across this collapsing sci-fi highway. The fight has a lot to be desired in terms of gameplay depth, once you really deconstruct it, but it is an absolute juggernaut of presentation, for the year it debuted. Sonic has always done spectacle well, and the promise made by this game’s marketing: an epic showdown between an unstoppable force and an immovable object in the form of two equal superpowers of opposing worldviews, is fully realized through the aesthetics. Aesthetics can elevate an experience, and Sonic Adventure 2 leans into this hard.

Sonic the Hedgehog runs alongside the menacing Shadow the Hedgehog as "Shadow" is spelled across his image. The two speed down a scifi highway amidst meteorites and space colony towers against the black of space.
This is one of the coolest things ever produced and I will entertain no dissent on the subject

It’s been a lot of fun reliving this fight, one of the longest-held in my memories, with the benefit of many years of design knowledge. The ‘rival’ fights in Sonic Adventure 2, in which the boss is a player character from the opposite story path, were heavily limited in what they could do, as they exclusively utilize the player character assets, animations, movement systems, etc. That said, it’s clear that this climactic battle was trying really hard to do a lot with a little. Not everything about it is stellar, but I think it’s still commendable they managed to make a pretty fun boss encounter that at least heavily delivers on the narrative promises of the game, if nothing else. I still find so much value in looking back at design of games like Sonic Adventure 2 that shaped my childhood, even with all of their flaws.

Sonic The Hedgehog celebrates over the unconscious defeated body of Shadow the hedgehog, standing on a sci-fi skybridge in the black of space, surrounded by inverted skyscraper-like structures.

That blue hedgehog again, of all places…

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