The gallery is completely unlocked from the start of the game if you find it too difficult!
Then it honestly makes the game less appealing, sadly.
It's so hard and unintuitive and there's no real reason to invest myself in it.
It honestly would've been better to give the game an easy mode than to make the whole game pointless by giving a key to the backdoor from the start.
Ok, sorry you don't enjoy! Hope you find something you like.
Unless I'm just unaware of it the gallery room doesn't have any of the text lines so you do get something for completing it in the time frame I'd like that it has a way to see all the artwork they made they put in work might as well show it