I've find a way to unlock the gallery:
1_ use UnRen option 1 then in game folder open gallery RPY file
2_ search for "sVersion" and replace "steam" and "backer" by "demo"
3_launch the game and go to the gallery, you see the kobold in the bottom right of the first page
4_accept his gift and you have all the scenes unlocked
PS: sorry for my english i'm not a native speaker.
Or just use this file already modified.
1_ use UnRen option 1 then in game folder open gallery RPY file
2_ search for "sVersion" and replace "steam" and "backer" by "demo"
3_launch the game and go to the gallery, you see the kobold in the bottom right of the first page
4_accept his gift and you have all the scenes unlocked
PS: sorry for my english i'm not a native speaker.
Or just use this file already modified.