I liked it! At first I didn't quite get the tutorial. I had to go back from level 2 to check it again because I didn't realize I could kill the geese, but after that I completed the whole game in one sitting.
Movement without lunging as the frog could get a bit frustrating at times. It felt really slow, and if I accidentally left an enemy alive on the other side of the map, it was kind of anoying to go back or even look for a fly.
I also would’ve appreciated a settings menu to tweak the audio levels since the music felt noticeably louder than the UI sounds in my opinion.
Overall, though, awesome game for a one-day job. Nice work!!