Easy character unlocking
Play an Xbox Live multi-player game and complete a stage using an unlockable character that other players in your group do not have (or vice versa). After completing the stage, the player(s) that do not have that character will now have that person unlocked.
Easy difficulty
Intentionally lose the game three then choose to continue.
Unlock Characters and Stages
Tenshin - Beat stage two in story mode.
Linda - Beat stage one in story mode.
Michael - Successfully complete the game in story mode.
Void - Complete Stage 4 in Story Mode
Kaede - Beat Stage 6 in Story Mode
Spike Sr - Beat Stage 7 in Story Mode
White - Beat Stage 5 in Story Mode
Hong Long - Successfully complete stage 3 in story mode
Astro Mall A - Beat Stage 7 in Story Mode
Astro Mall B - Beat Stage 7 in Story Mode
Ship Yard A - Beat Stage 4 in Story Mode
Ship Yard B - Beat Stage 4 in Story Mode
Imperial Opera stage - Successfully complete the game in story mode
Diesel Town (in Battle Street mode) - Complete Stage 3 in story mode
Spiker's Camp (in Battle Street mode) - Beat the level in the story mode
Emotes
Thanks - Rotate the [Left Analog-stick] in a full clockwise circle starting at [Up], then press [X].
Sorry - Rotate the [Left Analog-stick] in a full counterclockwise circle starting at [Up], then press [X].
Help - Rotate the [Left Analog-stick] in a full clockwise circle starting at [Up], then press [B].