Most of our time with first-person shooters is spent in multiplayer, obviously. But we do make a point to play through each and every single-player campaign to see just what the game can throw at us. One of the best things about shooters is when the designers decide to take the brakes off and just throw truly insane stuff at us. These over-the-top moments can't carry a whole game, but they sure do act as awesome punctuation. Here are some of the best shooter moments we've ever played.