What i gathered so far from my experience, this puzzle while it has a lot of glitches and all that shit it has a phisics added to the balls behavior. If you get over 100 balls on screen you lose, plus to be able to tell on which level you are look at the coin multiplier (x3 for level 3) and look at the colors (green appears on level 3), hope this helps more people get around the glitches and earn that badge.
Level 11, i found the symbol using the office, but there's no way i can place it there, virtual keyboard also lacks the numeric keys for ascii code. The game simply is impossible for my dell computer.
Strategy for last boss, go to where he is standing, jump and fire a black hole down, wait and fire more if he's still alive, he won't hit you while you're on the same spot lol.
level 74 is pure luck it seems, the thing is zoomed in so you can't see where the it will spawn, in a manner you can stop the spheres after a certain size.
Medium badge of that special puzzle HEUP is easier if you play around with smoke a bit. Learn how you can affect it. Excellente game and great involving story.
*Throws plane backwards*, instafreeze, few moments later chrome asks me to end the plugin and now there's that dead puzzle piece on a black screen lol. Really fun to mess around with that thing after the game is finished.
level 78 has a little "shortcut" on the part where you fall from the floor to get that spark you can land right on the edge of the flame and not die, with that you just jump to the tunnel to the left and complete it