Couple of bugs.
Missing images :
Goblin Chieftess entrance uses "ChieftessEv" and not basic name, but use basic naming after the cutscene. (can be renamed, so fixable)
Lepin villagers (hidden ones) are missing the faces img file. For example : the worried one in the barrel should be using "au villager 4.png", but is looking for "MGW%20Quest%208%20Lep%203.png" instead. The image shouldn't be named that way, that's just the the direction to pick the face of the right face set, but I can't know the name, thus cannot rename for a fix.
EDIT: events are contained in Map012.json, make a copie of villager 6 and rename it "MGW Quest 8 Lep3" for the one given in the example to fix.
Missing enemies :
So far, only the pixies. Fight ends as soon as it starts, files are all there, but you forgot to add them to the enemies.json file. The only mention is a test enemy that is applied to all pixies.
Vesper enemy is straight up missing. It exist in the enemies file, however this is the only mention of it. There is not sprite for it, no presence on the maps, nada. It might be an accident, but you simply cannot fight whatever it's supposed to be.
Maps/quests:
So, as previously explained, plenty of maps are bugged due to missnamed/missing files, but there is also the problem of the quests. Rn, main quests ends right after leaving the bandit house. You talk to arianna to delier the masks and then nothing gets triggered, so might want to add a message there.
Slime quest is still broken, and cannot be completed. Merchant cannot be inflated, as well as a lot of the quest givers (rn, only clover the lupin, and only after dealing with it's first quest).
There are maps that the player is locked out of, by rocks, it could be just a WIP, but it's weird to have the path markers if you aren't meant to access those places.
A lot of bugs are because of your naming conventions, make sure to write them down, in case something like this happens.
Viewing post in Patch 1.0.4 Notes (Edited) + Patreon Notice! comments
A few of these, mostly the softlocks, have been fixed already in 1.0.4.1/1.0.4.2, but the rest will be fixed in the next patch!
As for the rocks, I was working on expanding the map for 1.1.0 & 1.2 since I worked on other content at the same time as the development for 1.0.4, so I put the rocks there as temporary blockades.