I can say that I've been bullied by a bunch of trippy mushrooms!
I tried many times, but I was not able to end the game. I reached the 4th stage. To me it was too difficult and not in my control but in the mushroom's RNG by the way they jump or where they spawn.
I would love to have the kick mechanics more integrated, I found it not useful compared to the attack. Maybe using the kick would make the mushrooms drop more healing, so I have to balance the kick and the attack to stay alive.
Also, the healing shrooms have a small hitbox that makes it hard to catch them while sprinting in the middle of the fight. Being high during the fight is fun and I would make it more possible to happen.