I found it a lot easier for the survival achievement after I lost one of my glades; so I focused entirely on the other one. I protected my final mushroom as if it were my child B-P
Eh well, wasn't hard to do again. Good game. They should make a Rage 4 but make it harder. So that you can't win simply my mashing the melee attack button ;) Sadly, another sequel looks unlikely at this time.
It's you win, asshole.