so is it just me or is the amount of grinding you have to do to get the event unit completely unreasonable? I mean you can only get like 6 bat wings a day unless you make the game your full time job. I'd be fine if you could re-do a level without having to spend cores, but the pathetic trickle of points you get for playing normal levels is virtually worthless. And the armor on the pumpkin turrets is simply inexcusable.
It seems impossible to get anything good without slapping down some cash... I wouldn't have such a problem if it weren't for the fact these seem like once in a lifetime drops...

Anybody got any tips on how to get the event without spending a herculean effort? or am I gonna have to stage a revolt?