Use WASD to move around, mouse to shoot, and space to jump. You can't shoot in air. On the death screen, to restart, you can click the flag there.
This is my entry for @StandardToaster's contest. This is not a game, rather a concept/engine for a game. I hope to eventually make a game out of this. If you'd like to see a game made off of this, please love and favorite. Post your scores in the comments. As for making the whole game, I'd like to add several levels, enemy types, and maps. This is just the skeleton. Programming and Art - @bdogbears Song - Halo 3 theme Sound effects from bfxr/net