Castlevania: Order of Ecclesia Deathless (Albus Mode, Hard MaxLv50)

Albus Mode is the best alternate mode in any of these games since Maxim Mode - it's fast-paced, well-balanced, and Albus has all the tools he needs to handle the challenges the game throws at him while keeping the tempo up, without feeling overpowered. Major highlights for me were learning the Albus mirror and the Death and Dracula fights. Tons of fun! Done on emulator, DeSmuME.