Thanks for the kind comment and compliments!
About the ice blast, we actually buffed it twice because my co-developer/designer is too good at playing games, and I couldn't beat his tutorial levels. Probably still needs another buff haha, though I think the permanent slow it gives adventurers is underrated.
I agree about the level length, but there's a trick to level 11 that lets you beat it within about 30 seconds. It's really more of a gimmick level based on a bug we thought was too funny to fix for the jam. As a hint, pay attention to the sound effects and focus on targeting the archer that feels different from the rest.
Thanks again for taking the time to play our game and leave feedback!