Spent over 200 stamina, and still on Lvl 100. 8x8stamina (64) per run, and a 1:6 chance of progress. That's an average 384 stamina/lvl. If it won't be more difficult, then you can finish the 100 lvls from 100 to 200 with 38400 stamina. With 1 stamina/min recovery that's 640 hours meaning 26 days... so I wonder if there will be anyone reaching lvl 200 without throwing a bunch of money on pero glasses.

I'm not sure if I should waste my peroamins on this event at all.