Algodoo

Press F to fire the main gun, D to fire the machine gun, and E to fire the burst gun. Q/A to aim the burst gun, W/S to aim the machine gun, up/down to aim the main gun, and arrow keys to move.

Weaponry info
Main gun: Fires 4 shots and is good for the larger targets
Machine gun: a 25 shot bullet hose good for small targets
Burst gun:Somewhat slow to reload but is quite effective against infantry and other small targets, it fires 6 10 round bursts.