It took me a solid 10 minutes but I did it first try with 70 rounds on the last level. For the first 2 levels it just felt like i was pressing random buttons and somehow I won.
The third level is where I understood what to do and I finally beat it.
My biggest likes of the level were the art.
The art style was extremely cute and I also enjoyed the music which was extremely peaceful and entertaining. The color design with the red and purple is very cool. The ambiance of the bg music hit the nail on the head.
The magenta in the level page is also extremely nice and the art of the mushrooms and the background logs was extremely cool.
The biggest problem for me was with the UI. An indicator or an outline in the selected shrooms with an arrow directing between the two shrooms would be a good solution.
Another problem I found was the game just throws you in with the expectation that you know everything about it. If I have learnt anything from game dev is that players wont read. So, consider adding a tutorial level with lots of hand holding to teach the basics right away.
The shop has a pretty prominent bug. I am guessing that if you have already bought something and try to buy anything, the shop straight up doesn't work any more?
Other than those, I really like the game. The concept is amazing and the levels are also pretty challenging. The game is really cool.
It would really work perfectly with the bug fixes and it expanded upon. The scope is there, the chemistry between your team(it it was a team game, is it was a solo game, hats off to you dude) seems to pretty good and I would love to see it developed further.
Sorry for writing this long of a comment and being overly critical. I just love this game and wanted to give as much feedback, as I thought would help.