Board Thread:Questions and Answers/@comment-31702709-20170409105317/@comment-26042064-20170410042420

Crazed Cat should be first normally you'd just need meatshields and damage dealers (in that case Crazed Bahamut).

Crazed Cow is next on the list or after Crazed Tank.

Crazed Titan can be 3rd as long as you can hold out the enemy (same strategy with Crazed Tank) although it is luck based as long as Crazed Titan doesn't shoot out shockwaves.

Also try taking on the nimoy bore, as long as you have Psycho Cat or other anti-alien like Castaway Cat it should be easy to deal with it.

Take time to level up (I know it's kinda boring) but, that's what the game is about. Trial & error.