Great job! Love an idea and simple graphics.
Some notes I want to tell:
1. It's not comfortable when I spamming clicks to move and suddenly click on "card" with weapon.
2. I wish a better balance curve because of situations like "no enemies for 1 minute" then "10 enemies per 5 second"
3. Background music will make it more fun!
4. Maybe more ways to keep clover alive.
My personal idea to make some "station" you need to bring on pieces from tree before you go to main clover.
Hope you will try our game too. Wish you all the best in your development!