Sorry about that, I should have put up a control scheme. Weapons can be switched with 1-4, Q and E, or the mouse wheel. In regards to the 3D vs 2D this is an issue I've encountered a few times. 2D is simpler, but I personally play more 3D games and I keep getting drawn into wanting to make 3D games. I also feel more comfortable in Blender than in most drawing programs. See my scribbled smoke particles for an example of my 2D work :P