A lot of fans believe that Steve is just hiding. Understandable, considering viruses only live and reproduce in living tissue and the T-Veronica can only be spread by direct injection. In X, Wesker does hint at him coming back too. Considering Capcom's annoying habit of ignoring even peripheral characters who obviously survived, don't count on the issue being revisited any time soon.
Some fans were convinced that Wesker's lackey in Resident Evil 5 was actually Steve instead of Jill Valentine during early trailers when the character is shown over a line spoken by the then unknown Irving, an easy assumption to make since no one knew that Jill had even gone missing. The fact that his voice was strained and coughy didn't hurt either, which would make sense seeing as how he had been transformed into a monster, killed, and then revived only to be put under who knows how many ugly experiments.
For a while in early 2012, some fans thought the mercenary character in Resident Evil 6 was Steve.
Moths are poisonous, difficult to avoid, and you have to run through their corridor multiple times. They only take a few shots to kill, but good luck hitting one. Any that are killed get replaced as soon as you leave the room. If one lands on you, then you have an egg planted on you which will poision Claire as soon as it hatches. Thankfully, Chris doesn't have to deal with them, and there's an infinite use Blue Herb in the same room to cure the poison (if it wasn't there, most players would likely run out of Blue Herbs very quickly, making it more of an Anti-Frustration Feature than anything).
Goddamned Boss: Alexia's final form. All you have to do is hit her once with a special weapon. Seems simple right? Problem is: the time is ticking, she moves around way too fast, all the while she's spewing fire in your face every 5 seconds. The two available strategies are to shoot randomly like crazy and pray you actually hit her, or keep firing in one spot and hope she stupidly banks into it; both are equally inefficient.
Good Bad Bugs: Remember how pausing in the original Resident Evil would reset certain animations? It works for Mutated Steve, too. Pausing and unpausing will revert him back to standing still for about half a second before he charges again, so if the player has enough patience to pause and unpause multiple times, they can outrun him without taking any big weapons or wasting any healing items.
Idiot Plot: You have to admit, invading an armed-to-the-teeth Umbrella base in Paris because Chris said on his diary he was going to their headquarters was pretty dumb of Claire's part, especially when said diary also mentions he doesn't want Claire involved on all of this. It gets worse: After being captured, Claire uses a computer with Internet connection to contact Leon for help. Leon in turn contacts Chris. To think that she could've found Chris all along if only she had talked to Leon before.
What's worse than fighting a Tyrant? Fighting one in the confines of a plane before you have any significantly powerful weapons.PROTIP The least painful way to kill Tyrant is to save all thirty of your explosive crossbow bolts and quickly empty your entire stock into him as soon as the fight begins. Immediately turn and hit the cargo release after that, and Tyrant fall down, go boom.
Nosferatu if you're not good with the Sniper Rifle. If you get the bright idea to bring your big guns with you to cover your ass, then you'll just wind up hosing yourself later as they won't be available for most of Chris's half (since you lose control of Claire immediately after the fight and don't control her again until close to the end of the game), so non-skilled snipers are left with the Morton's Fork of either getting stuck at a brick wall of a boss or crippling themselves for most of the latter half of the game.
Mutated Steve is invincible, faster than you, and can kill you in two hits. All you have to do is run to the end of the hall, but unless you brought enough healing items you cannot make it.
Alexia's first form. While not particularly fast, she has an extremely powerful flame attack that's highly unpredictable and hits at a very long range. Get too close and she uses her One-Hit Kill attack on you regardless of your current health. The fight turns into a Curb-Stomp Battle for you if you bring the Magnum, but most first-time players probably won't have it due to it being permanently missable if you don't perform a Guide Dang It sequence of events in Claire's half of the game.