Here is the full list of all 10 ABO MANDO achievements.
DEFEAT THE BLACK CHARRO
FINISH THE GAME
DEFEAT TO THE NAHUAL
DEFEAT THE GRIM REAPER
DEFEAT THE WEEPING WOMAN
DISCOVER A GLITCH ROOM
GET ALL GOLD OF THE UNDERWORLD
GET 70 COINS
GET 5 TRINKETS IN THE CRYPT
GET 5 PUMPKINS