Genocide

Dirty Hacker Ending

Alphys Ending (genocide up to Undyne the Undying, but abort genocide in Hotlands)

Kill all bosses and between 1 and 20 random enemies

Kill all bosses and more than 20 enemies

Dog ending (Kill all bosses but spare all enemies)

Kill all bosses except Papyrus

Kill all bosses but Mettaton

Kill all bosses but Mettaton and Papyrus

Kill all bosses but Undyne (and optionally mettaton)

Kill all bosses but Undyne and Papyrus (and optionally mettaton)

Kill all bosses but Toriel

Kill all bosses but Toriel and Mettaton

Kill all bosses but Toriel and Undyne

Spare all bosses except for Papyrus

Kill all bosses but Toriel and Papyrus

Spare all bosses except for Undyne

Spare all bosses but Mettaton, kill more than 10 enemies

Spare all bosses, kill more than 10 enemies

Spare all bosses, don't befriend Undyne kill 0-9 monsters

Spare all bosses but mettaton, kill 0-9 enemies

Spare all bosses, befriend undyne, then kill 1-9 monsters

Spare all monstes and befriend Undyne

Have snowman piece

Don't SAVE

Wearing Bandage

Never use food