10 Final Bosses That Utterly Ruined Their Video Games

5. 343 Guilty Spark - Halo 3

As first-person shooters go, Halo 3 offers you some of the biggest, baddest, and downright enjoyable enemies to blast your way through. From en masse cannon fodder of the Grunts, right up to bruising might of the Brutes, via the downright creepy spores, the game forces you to adapt your combat techniques and master a variety of weapons to survive.

With the finish line in sight though, the plot twists somewhat and your irritating robotic sidekick takes a turn for the murderous after realising that your plan involves the inadvertent destruction of his precious facility. 343 Guilty Spark is, at best, some comic relief for most of the plot, and coincidentally his offering as a final adversary is equally laughable. You can either pick up the unlimited ammunition Spartan Laser that's kicking about and blow him up in a handful of shots, or take him out with any other weapon by simply strafing left and right for a bit.

Despite the game demanding so much combat skill and knowledge of the tools available, this final fight gives you the biggest gun possible and reduces your tactics to two dimensions. It would have been insulting to offer this up as a first fight to let you get accustomed to the controls, but its choice as a climax is as baffling as it is at odds with the entire spirit of the game.