Fun game! Once you get to level 20+ you seem nearly unkillable especially if you know when to run away. This is where my criticisms of the game begin. I get to a high level in the game, ~25, and then go searching out for the other high level players in the room. When I try to engage they just run away and it's essentially impossible to catch up to them. They're not wrong to as I'd probably win 9/10 unless I get ganged up on. I just end up getting bored and close the game at around level 30.
Some suggestions for the game is to reduce the bulkiness of characters, make the dimensions of the room smaller, and/or increase the number of players in a room. Increasing the number of large fights would make the game more dynamic instead of having the same people sit at the top of the leaderboard.