Loving the game! One small annoyance is that the colour of the item health bar is hard to see – I broke a pickaxe because I didn't realise that it needed repairing.
It's OK, but I agree, some of the levels are entirely down to luck. Also, I wish Kongregate had a rule for games that the R key should always reset the level!
Level 25 keeps freezing for me - when the tower comes down, there's too much destruction to cope with, and the only way I can get the game to respond is to restart the level.
The blue button at the top left corner is for resetting. I forgot to mention it, sorry about that.