I either think its a secret of its just there to mess with people
Damn it! I'm just so desperate to find the final hidden achievement, I've tried using different fluids from the storage room, getting as many problems as I can incorrect, trying to complete the Mr. Mix bonus game which I have not, checked countless lockers, even the suspicious ones, dirtying Viktor's jacket 4 times in a row, collecting other organs and trying to put them on Albert's torso, etc. I just want to figure out what the silhouetted sun blob could be! 