The game idea was cool, the music and graphics were nice. I gave up after dying on level 3 though because:
It was very unclear what killed you, I for example died by bumping into a pair of rocks close to the river on level 2, I also feel like water shouldn't kill you, only that you should be prevented from walking on it(as bacteria generally don't die from water) the colliders of certain enemies were very off, and you had to restart from level 1 if you died.
Except for what was mentioned above, I really liked the game.