I only found 3 bugs: 1. at running training "speed", if you fall too fast (down four or so lines in a row) you might bug through the next floor. 2. at swimming "reactions" if you jump, sometimes, in air, you might bug a double-jump. This is pretty annoying at high speeds. 3. at swimming "reactions" again, you might sometimes get stuck at the bottom of the screen causing you to get eaten by a crocodile.
Anyways, great game, been waiting for so long.