The Ex Appears

THE EX APPEARS
All enemies are alien, so a anti-alien set up works great.

At the beggining some weak shibaliens will appear, some seconds later hyppoh will start to spawn, the main boss will appear after the enemy base gets some damage

The main boss is Alien Gory Groom, to defeat him easily use a alien freezer such as Surfer Cat , also Wheel Cat can be used to clear the peons, but do not even think to use against the boss, Alien Gory Broom out-ranges him.

This stage is really easy if you have decent level cats (lvl25 sufer cat is enough to one-shot the shibaliens) because takes some time before the boss starts to kill your peons (and this time can get longer due to his warp ability)

Anti warp cats are not necessary unless you have really low level cats or if you don't have strong attackers against aliens, also the boss doesn't have 100% warp chance, so he can't break trough your meatshield easily.

PD: I made this guide while i was playing the level, so don't expect a high defined strategy, i hope this is at least useful to know what are you fighting.

PD2: All you need to know about this stages is that the main threat is alien, but also some black enemies appears in the next levels.