I don't know how the game played before, but the forced scrolling can't possibly have been an improvement. In general, the gameplay is very poor. Audio is decent, so are graphics, although the characters could really use some animation. The controls aren't very good. (Especially the jump and weapon switching ones.) Abuse-style controls would probably be better (ie. move with arrow keys or WASD, aim and shoot with mouse).

An interesting game. The shell castings and explosions are really nice. The guy should move a little more smoothly and there should be more weapons.

Amazing quality game. Wow. Keep up the open source games man!