Game worked just fine for me using Firefox, but I didn't really enjoy the stiff controls at all.
For the chimney section I had to quickly turn left/right and meow to get two smoke clouds close enough to jump from one to the other when the first one vanished, then quickly meow at the window and avoid the flying boot. Took a few tries, but it worked!
Finished the game. Triangles are just the worst; they fire way too many incredibly slow beams that they become practically impossible to avoid after too many of them have spawned. This is absolutely horrible in a game where the collectibles spawn at random locations on most levels.
The "die and get sent back one level"-mechanic that appears in the later levels turns a fun concept into a really tedious game of luck.
Some of the later levels were quite hard, but were made incredibly easy by the mouse boundary teleportation.
Overall, it's a fun concept, but the game design as a whole could definitely be improved.
You should probably consider disabling the dev tools, because the badge can be acquired by simply opening them by pressing ´ and pressing next level until level 50, then complete it as normal.
Scrolled down a bit to check out the comment section; I must admit that the scene that pops up when the game has been out of focus for a while sure is interesting.
The game is also really great; 5/5 stars.
The quality of this game doesn't matter; what matters is that you made a game and were brave enough to throw it out in public like this, something I am afraid of doing, because the projects I've done have been started and never really been finished.
Good luck with any future games you make - and perhaps, one day, you'll go back to this one and make it better, or an improved version of it.
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Dizzy and stressed?