The game is fun until you get to higher levels and the thing slowing you down is not being able to enter more numbers into the monster level and the workstation. You can go higher then the amount you are able to insert by clicking the right arrow, but having to click for each up and having the up do little to nothing at that point, its a waste of time.
Bat-gang shouldn't stop your upward progress when you are released from it, it should add to it. Had them ruin so many runs from hitting them at a low altitude while rising quickly