Cool game and concept, with very intuitive design, felt very polished too, with SFX and all!
Took me no time to get the hang of the reloading mechanic and master it. I made it to level 9!
My only request is that 'powerups' were a bit stronger and more frequent:
-- like maybe a perma-increase on weapon tier on rolls every 5 levels
-- or damage/HP/shot-time/reload-time upgrades
-- or some 3-use dice with OP weapons that do 1shot kills or group shots, helping you pass half a level