Super Metroid 20 Supers 20 Power Bombs Route

morph
missile
bomb
ET
mockball supers (1)
Varia
HJ
HJ ET
Speed Booster
Early PBs (1)
Above Early PBs (2)
Shinespark Supers (2)
Blue Brinstar PBs (3)
Spore spawn's supers (3)
Critter Supers (4)
Critter PBs (4)

Vorpal's route (test this!)
morph
missile
bomb
ET
mockball supers (1)
Early PBs (1)
Above Early PBs (2)
Blue Brinstar PBs (3)
Spore spawn's supers (2)
Critter Supers (3)
Critter ET
Critter PBs (4)
HJ
HJ ET
Ice beam
Crab supers (4)