Were you able to open "The Door"? Did you interact with a "Safe Button"? Have you seen acid, dark labyrinth? How about "The End" Screen? :) If not please reference some tips on the game page - else just ask question here and we help to reach the end :)
"The Door" has a related hint in another place that also mentions "The Door" Acid part a bit confusing - the acid regulation button also unlocks a door in the acid room. Hope you figure this out :)
