oh man, have you guys tried Woodie yet? I had some good times with him.
He has an indestructible axe, that also chops down trees faster than regular axes. If he chops down 4 or 5 trees within a minute, he switches to his beaver form. well holy fuck, that beaver form is retard strong. I demolished 5 spider nests and this big frog dude who was hanging out near my base. So it seems the trick for woodie is anytime I run into enemies, i'll just chop a few trees down, enter beaver form and demolish the enemies, until his wood meter runs out.