Arrow keys to look and move. Use A and D to strafe left and right. Don't die. Space to sprint. Mess with the res to see your favored game speed. Choose poor graphics for good gameplay, or good graphics and way laggier.
Thanks to Griffpatch for the amazing tutorial for the walls and entities. WARNING-THIS GAME BROKE BADLY idk why but I tried to add multiple entities and now the walls look like mother.