The gameplay is nice! But there are two things that kept me frustrating:
1. Even if it's 3D all the enemies are still in 2D and sometimes I couldn't see them properly because of it. Also, their colors are the same as the environment - confused ..
2. Weapons .. maybe I didn't understand how to do it properly, but I guess you can't "not pick up a weapon" ..
The sounds are nice. Music is cool ..
Overall game kept me for a while, because of progression (mobs, points, and etc)
Good job!