Frame rate is too low for a game like this. I clipped through bullets and smaller blocks all the time when I move my cursor fast enough. It's a big problem for a game where moving fast is a legit strat.
Now for an actual bug: there's this skeleton king boss (right before tundra, not the side quest one), at ~10% health it stopped taking damage from my skeletons, and all my ice shots stopped midair right as it's about to hit. The ice shot projectiles stayed there, and as I threw more ice shots at it, more stayed in the air until there's a halo of static iceshots surrounding the boss. It still took no damage. (Or whatever this single target necro spell is called)
I have no idea about the stats of my summons, how much damage my spell does, what monster attack does, the experience of monsters...basically, nothing solid. I have literally no idea if my attacks just deal a fixed 25% damage and my skeleton 30%, since the trend started in the desert and stayed the same all through to tundra.
Ditch the auto attack. I hate it when I wanted to stay and ice ring, but my character runs off to the Bowskel because it's the only monster not frozen as it's far from the cluster I pulled to kill with AOE.
Best comment is one that asks you to add Horror tag. The actual vote of horror tag is ten times higher than any other tag, but in negative. Definitely clickbot.
 "Idle RPG"){kind=icon}
 "Grow Defense"){kind=icon}
 "It's Just TIC TAC TWO"){kind=icon}
 "Tough Growth"){kind=icon}
 "Forgotten Dungeon - Raise undead"){kind=icon}
 "Shorties's Kingdom 2"){kind=icon}
 "Stormbound"){kind=icon}
 "Three Goblets"){kind=icon}
 "Pixoji"){kind=icon}
 "The Perfect Tower"){kind=icon}
 "Mighty Party"){kind=icon}