Alright, here are some pointers of mapmaking. Never make a level were you pretty much have to do the same thing over and over and over and over and over again. It makes a level boring, and pisses me off. The zaps and the thwump did'nt really pose a threat, which makes half the level easy. Put an enemy in the bottom area, I suggest a chaingun, NANed. The gold was kinda cool, but on a slow computer it would slow the gameplay. It's your first map though, so don't take my criticism too harsly. Keep mapmaking!