LMAO the lionfish actually made me laugh. Funny idea that I was skeptical of when I read it in the explanation, but once I started playing it was great. I made it all the way to level 8 but I couldn't get any further. The first tunnel alone took 41 seconds, so even after 15 mins of trying I just couldn't beat it.
The gameplay itself uses some great mechanics, but it's just plagued by a few bugs that got very annoying. The ceilings killing your momentum, bouncing midway up walls, and your bounce height being reset whenever you boost instead of being added to.
Btw, how did those exams go?