Very cool game! I've played about 6 maps so far on my Transformer Prime. If you'd like some feedback:
- it crashed once

- the ads screw up the menus in places (I'd be very happy to pay a few bucks for an ad-free version)
- it's not clear what some of the pick-ups do (mostly the sprinkler though I just got some C4)
- there doesn't appear to be any penalty for losing a character during a map
- the interface for placing objects works well, though it wasn't clear to me that I had to tap to rotate (I tried dragging my finger)
- the game sound keeps playing when the game isn't on the screen (either locked or in another app)
I guess at this point I'd like some higher difficulty too as I get through each map on the first try.