Wow, nice game! This one really got the charm! The dialogues are funny, the characters have personality, and the entire premise is hilarious. The models are really well made and the gimmick of the game of being able to choose upgrades for both you and the boss is an interesting and novel factor. The arena gimmicks are also a great addition.
I admit tho, that I couldn't really play it at full potential, maybe because I don't have a controller, but I don't know, I think I found the arenas a bit too small, and sometimes its gimmick made the fight too easy or too hard. I had the train run over the monser 3 times in a row (or at least I think it was the train that damaged him, either that or Viktor became a superhuman for those 3 hits, I think feedback for damage could be improved because sometimes it blends with all the other effects).
Overall, a nice funny game, rich in personality and with a great artstyle, but may still need some polish. Hope this review can be useful! :D