Juice galaxy is in development, and there's a lot that has yet to be completed. In some respects, though, it really is a "wander around and stumble onto stuff" game. The quests can help point you in the right direction; I'd suggest talking to NPC's in the graveyard to get hints on where to go next (the sign with googly eyes is particularly helpful). Also, several of the areas you visited have bosses in them, and beating them unlocks quests from other NPC's. Basically, get some equipment you like and keep exploring!
Also, know that the further out you go into the wilderness, the more powerful the monsters become, and the weapons they drop become stronger and stronger. Right now, the "endgame" gameplay loop is basically just grinding for the most powerful items with the best modifiers you can find while fighting comically powerful enemies.