i beat the game, it was cute and i liked it, but i feel like i missed tons of things and i have no idea what to do for them. i've just been wandering around and am lost so any hints would be appreciated

1. i got the outer wall key but i don't know where to use it or if i already used it somehow

2. i never figured out how to get to the blue mansion in the snow area. i have two 1/2 litre snake oils but they dont seem to do anything either

3. i also have no idea how to unlock the seawater treatment facility

4. i never fought the giant anime girl from that one screenshot on the main page if that's possible

5. also from the main page screenshots, i never found that office looking area

6. is there any way to get unbanned from the south coast

7. in the city outskirts theres a door that says it could be opened from the other side but i dont know how to get to that other side

also a couple issues:

1. in the building that starts the path between the snow town and fishing village, beating the one enemy in there crashes the game. it just gets stuck on a black screen after i win

2. i unlocked the door to the entrance of the city outskirts, like where the bus drops you off, but then when i try to go back through it nothing happens at all. so i cant even enter from the bus stop and i had to get back there through the worm cave after i first reached that part and opened it

Hi! I'm glad you hear you enjoyed the game and I appreciate that you played it until the end!

To address your points:

>1. i got the outer wall key but i don't know where to use it or if i already used it somehow
This key is part of normal progression and is used somewhere in the wall. If you encountered no doors that asked for it, that means you've always had it in your inventory when it was necessary.

>2. i never figured out how to get to the blue mansion in the snow area. i have two 1/2 litre snake oils but they dont seem to do anything either
A bit of exploration should reveal how to enter the mansion. However, be warned, after fuzzy cat has joined you, this sidequest is no longer available!

3. i also have no idea how to unlock the seawater treatment facility
Regular exploration should take you through the entire area. 

4. i never fought the giant anime girl from that one screenshot on the main page if that's possible
The fight is in the gamefiles but inaccessible atm- part of a scrapped sidequest, the implementation of which was later deemed non essential. A future update could see this fight return.

5. also from the main page screenshots, i never found that office looking area
It's should have been accessible during control of Tabby cat... had I connected the area. It contains no essentials, though.

>6. is there any way to get unbanned from the south coast
Not at the moment, I did not think players would be interested in this. However, since you are not the only one asking about this, I will implement this. 

>7. in the city outskirts theres a door that says it could be opened from the other side but i dont know how to get to that other side
This one will require a bit of exploration within the wall!

The two issues were things I overlooked, so I fixed them for the newest release (available for DL now).

Thanks a lot for your feedback! This has been informative in terms of how players experience the game, which helps me understand which directions to go in. Hope you had a good time!