Really fun world and love how you have shaped new bits of mechanics that feel interesting in gameplay and perfectly fit the theme. I especially liked replacing injuries with Weariness (I had a lot of trouble adapting "injuries" in my own games).
The Big Scary Alien adds a lot of to a fun to the dynamic.
It feels like the final show down with Bonkers could feel a little bigger and more explosive, perhaps some more description around the final form of Bonkers?