Great, but not perfect. Got me from c.80-99, with one ring of endurance out of 552 total floor 5 completions. Averaged 78k xp/hr at level 98. PB for full run 06:34, but generally took 7-8 mins. Very common issues include running straight into traps (missiles) at the start of challenges. Also, repeatedly fails the final challenge on Floor 5 - generally takes 3-5 attempts before passing. I would recommend it, but to the developer -- a fix for these issues would be great for future users.