I'm through the game, well mostly thanks to the MV Cheat Menu. I only used god mode as the clothing damage is ridicoulus at times, considering you can barely afford the repair in the beginning. I was 3 hours in without cheats and no clue until I came to the conclusion that this game may end up in an extreme time sink.
First things first, I have no clue what I was doing. I ran around the World Map and tried to accumulate enough tokens (the ones you trade in to the black-clothed dude) for stats and better equip. Doors usually got brute-forced by trying out every Key.I think I don't even have all clothes, there were things unaccessable like the Goblin encampment where I gave up looking how to get inside. Some costumes where avaiable by the before mentioned black-clothed dude for free or by Events all around the place.
The only reliable way for starter money imo was the cave north-east of the first town where the three slimes wait. Loot everything at the entrance, this should be worth about 9k moneys, about two full clothing repairs. How long it takes to respawn was something I've never found out.
At least by killing off the End Boss you get to view all scenes within a crazy huge Room made for it, animated ones depending on whether it had one and battle fuck and costumes. You can also watch most assets in the ressources, they seem to openly lay around somewhere except the animated ones you have to turn into a gif yourself. New Game+ is possible also, didn't check yet if there are differences to the initial playthrough.