Your goal is to reach the end of the level, the "vortex warper", that warps you to the next level/worldmap. You will encounter numerous villains. Majority of them can be defeated by simply jumping on them (Space bar + W or S). Some cannot be killed and only harm you if you try jumping on em, so be careful. There are 3 pickups in the mod. First is the syringe that replenishes your health. The second one is the pill that makes you immortal for a short time. Finally the third one is a NES cartridge. Collect them all (total 4) and you unlock a bonus exit vortex in the last level, below the real vortex... Controls are simple. Use W to go forward, S to go backwards. Use mouse to turn around and space to jump. You can also try pressing the right mouse button while pressing W, to perform a forward dodge. Known Bugs: shouldn't be much, but sometimes the death cam goes all nuts zooming the player character's face. Probably caused by the level design in some parts, and the camera gets "jammed".
Sam in action.