I'm currently on Chapter 6.I must say, the graphics are really impressive! I really like Chapter 5 and how the arena gets smaller and smaller and that final attack is a challenge!
As for bugs, I did remember killing the Croissant guy only to get killed afterwards.It was a bit frustrating but I know this is still beta so I let it pass for now.
Great job, nonetheless. I'm recommending your game to my friends :)