Goopy Bloop Boop is an achievement that requires the player to knock back a Laboratory slime in the Dragonkin Laboratory using one of the following abilities: Kick or Stomp for melee, Shock or Horror for magic and Demoralise or Rout for ranged.
This achievement can be completed in either normal mode or story mode.
For the magic and ranged abilities the player will need to unlock the Scare Tactics first.