Really enjoyed your game! LOVE the music and sounds, reminds me of Punch-Out!!. I think each moss attachment should slow you down a tiny bit in addition to this combo mechanic I see in the comments. Also, the fact that enemies fire projectiles right at the start is too much difficulty right off the bat, in these kinds of games projectile shooting enemies don't start until about 5 min in, I assume you tested this and probably found the game maybe too easy without the shooting? Maybe have it shoot less often, I'm having a hard enough time dodging enemies, great work!
Fair enough, I considered extending the timer to 15 minutes and having a more gradual difficulty increase but I figured for a jam game it would be best to keep it shorter. In hindsight it definitely could have been a good idea to let the player get a few level ups in before throwing anything too challenging, since the first 2 minutes are especially rough if you get unlucky and don't get any attacking moss. Thanks for playing and for the feedback!