What do I need to do to unlock 'Guardian of the Deiaty'?

20 fps cap? Anyone else experiencing this issue?

every time I put in values, it changes back to the original number even though I freeze the numbers.

so when starting a new game, it said that to get the central and rolling island, we need to compelte the game once. so how do i do that?

請問這個steam deck可以玩嗎