Well done, compacted experience, only a few buildings to upgrade. I must confess I didn't beat hell because by the third prestige everything seemed too grindy, but the base idea is good.

There are a few things that could have been executed better, like grabbing resources WHILE mining them instead of having to wait to release the mouse to pick them up. Or having to manually place the cherubs back to work every... 10 seconds or so. But still, well presented and good pacing, fun game.