some notes
Boring. Repetitive, RSI generating, and glitchy.
Some points to note:
* If you only have the normal gun, you can spam-press the buttons of the guns that you don't have and your gun will shoot 3x as fast !
* If you got a shotgun, and spam the other gun buttons, your shotgun will shoot 3x as fast! And eat ammo 3x as fast. Either way it's pretty powerful. It'll probably work for all guns, just leave one or two slots open so you can spam those for extra firepower.
* Upgrading the tomb doesn't always accept mouse clicks.
Insanely boring and repetitive other than that... and my hand hurts from spamming that button now :P