Rengoku II: The Stairway to H.E.A.V.E.N. (PSP)

H.E.A.V.E.N. -A, -B and -C
Defeat Gryphus in level 8. Then, re-enter Primordium (level 0) after the intermission sequence and enter the door behind you.

Highest H.E.A.V.E.N. Floor
Successfully complete all 99 H.E.A.V.E.N. levels.