I think its hard to find the stuff that you need. maybe there an upgrade where you can detect lives or metal.
when the robot got big its really annoying to get it to follow because you need to be far away for it to come, and some time it soo big that if a mosquito suck the other side It will take so long to go to the other side.
the art is sfx is really cute.
over all very addicting game and satisfying game.