ok i had to make a new profile, you cant teleport out of that airplane.
astroknights island cannot be completed. most of it is playable, but the space section and some fights become difficult or unplayable due to the screen where the actual gameplay is happening is either somewhat in the bottom right corner (the space section) or farr in the upper left corner (ice boss fight). the space section isnt unplayable, but its a little difficult, and the boss fight is completely unplayable due to not being able to see most of the room and you can only control ur character in the small window you can see. id noticed this in other places as well (the map of africa in nabooti, the comics in the comic shop in big nate) but it hadnt become game breaking until then. also when i received one item, it glitched out and i had to save and quit but nothing....saved.....so i had to redo the entire island up to that point
ok you cant teleport out of that boss fight so i have to make another new profile
counterfeit island (as far as i can tell) cannot be completed. most of it is fine, just dont jump when you have the balloon, bc u will not come down. there's a part where a guard is supposed to turn around and walk to the right and u have to trail behind him but he only turns around but doesnt move. (im not too sure about this one? but tutorials for the island say that he'd move) so the island cant be beaten. aside from that, there's some skybox issues, and one of the items you get makes ur item screen super laggy (i think its the timeslot card or the screen print??)
great pumpkin island might not be able to be beaten?? i got stuck on the second pumpkin minigame but i might just suck. the first minigame's timer also goes down really quickly so watch out for that. another consequence of faster fps i suppose
steamworks island also cannot be completed, as the puzzle to get to the first npc will load endlessly after beating it.