Just so you know, this is a 'one of everything' game.
see a new creature? Kill at least 1 of them. See a new kind of tree? Cut down at least 1 of them. New plant, pick it. New (non tree) seed, plant it. New thing to make (not a weapon or armor), make one (eg, if you can make nails, making one may unlock stuff that needs to be nailed together!). And so on. Not everything unlocks more stuff, but enough things do that this will keep you from being stuck again.