Skip the intro cutscene by pressing ESC. The bullets aren't hitting where the aimer cross hairs are, the cross hairs just indicate what gun you have. The bullets hit where the delayed white circle is to give the feel of operating a heavy gun!
Press "" ~ "" you bring up the typing screen to punch in cheats. (No recommended!)
cheat removeAllEnemies: removes all enemies currently on the screen.
cheat endLevel: ends the level normally. If there are enemies left on the screen, they will need to be killed before the level
stops. But no more enemies will apprear.
cheat ILoveThisGame: gives the player infinite points to spend on upgrades.
cheat duke, nuke 'em: launches an nuclear bomb