I own Expansion Pass 1 and when I attempt to start a DLC level, I get a black screen. Levels from the base game load fine. Any thoughts?

Hey! Was just wondering whether any of the DLC are required to be able to unlock 100% achivements in the game, or it can be done just with the core game.

Is there any plan to release or make the Expansion Packs available on the Switch console? I don't know where to ask this question, but because i play this game usually in our bedroom with my wife, we are rather using the switch than pc since it is more convenient. We would like to know how to get all the new levels from expansion pack 1 and 2 on our Switch. Thank you for your help....

I can't find it? T_T I've completed every other level - any help will be greatly appreciated!

Conditions: 50 differences with fewer than 10 mistakes I tried re-playing the same 2 levels 5x each; didn't trigger. I tried re-playing the first 10 levels in sequence; didn't trigger. I tried playing world 2 for the first time, without making 10 mistakes; didn't trigger. I tried relaunching the game (in case it's a per-session mistake counter), re-played the first world in sequence, making a single "mistake" due to a buggy hitbox on the last level; didn't trigger....