Thank you for the feedback. I'm thinking for creating of some sort of portal mechanic in the end of every wave to spawn you back. There will be a major graphics update. Also the GUI will be improved - I think it will be in game ui, the user might have hp bar or something like that. I need more brainstorming on this. And crystals and coins will appear only on change and in shops.
The in game hint text will be replaced with signs.
Pressing down C works only for the uzi gun right now. The pistol, shotgun and sniper rifle don't have autofire. Now there is music and sounds. I added the sounds and music just after the deadline and had to revert back for the jam, because it wasn't allowed. Now they have additional rule for that, because of this game :D
I'm preparing a lot of new stuff, but I had more time and when there's no urge with deadlines, things happen slow.