A and D - move left and right Space bar - fire the machine gun Left mouse - select difficulty Iron Cross difficulty - No soldiers helping Regular - You have soldiers helping you, and It is the base game. Easy - It is like Regular, but the first level of french soldiers don't move.
Also the guy i remixed it from only had the sprites and backgrounds, so i did the codes, and you can tell i made the easy level button. Please Heart and Favourite this game :D