so getting stuck inside the floor is a thing. unfortunately, [N] does not fix the problem, and refreshing the page sends you back to the beginning of the game. could you add a 'reset level' button or something?
clone cap is bugged. says ~40000, needs only ~30000. cap button follows the 40000 one. will it be fixed soon? (that was an example, it is like this in other things as well [physical, skills, monster])
you should add a ultimate upgrade that increases the cap of things like elemental piercing attack speed, bounce chance, multishot chance, etc. after reaching a high enough wave the damage per shot is too low and you start to rely on the more random things like elemental piercing, purification and serious missile to work, and it takes a much longer time to complete each wave.
you should be able to pick your main skill at the beginning, it is very annoying to wait to see what your main skill is and then not getting the skill you want.
 "Guns Don't Need People"){kind=icon}
 "Idling to Rule the Gods"){kind=icon}
 "Lost Ethereal"){kind=icon}
 "The Perfect Tower"){kind=icon}
 "The Idle RPG"){kind=icon}
 "Kongai"){kind=icon}