to know if u can beat stages u need to do a simple math: for example Stage X-50 ask u to have MIN:170k PEN, Your PEN if u check your stats on profile is 100k so you simply do 170(k which is 170,000 btw)-30% = 119, so u have 100k and u need 9k more PEN to beat the stage, simple as that, this works for dungeon stages too, too low PEN and u cant do the stages