Gameplay: Needing to use different acids against different bacteria was interesting even though the gameplay wasn't the most polished.
Graphics: Pixel art looks good but it'd look better if all the art had the same pixel size in game(you can do this by not changing the scale of your objects).
Audio: There was no sound.
Theme interpretation: I don't really get the bug theme from this game.
Innovation: The idea is pretty unique and its cool that you got the idea from Kurzgesagt.
Overall: Really good even though its not the most polished, especially for your first game!