to enter 2player mode press the two player button. for p2 use arrow keys, and for p1 use W,A,S,D to move. Try to stay in the ring there are a total of 2 obstacles one that duplicates and attacks at you, a second that appears and disappears crossing the map. However, if you leave the light ring it will leave you venerable to the particles and will swiftly take away health, also when you run out of health the reactor cores explode.
this is a two player survival, although both players need to die to lose so you can technically you can do one player if you let the other person run out of health (the tools do nothing) and I don't have anything else to say but... ENJOY!
