Graphics were surprisingly nice, seems like it was all in 3D.
Sound effect for the gun, no other guns available. Weird thing was when the mouse wasn't moving the gun kept moving. Gameplay seems like it could be really fun with more stuff implemented (and balanced, because Player 1 always has the advantage since they start first). Stability was alright but the FPS level lagged a lot.
Overall a nice game with a great idea! Hope to see it fleshed out more!