Shark, if you don't want to even out the air guys, then we should be able to choose our three tower per wave
cause without air gem it can quite quickly become too much
but it's the same with the ground guys, they get tough too fast like suddenly tough
the last level rely on pure luck .... sad for a strategy game don't you think ?
anyway still love the game, just makes it painful to have to do the last level again and again till you have some luck with every ninja wave