//Set icon item
setIcon(<minecraft:skull>)

//Set title String
setTitle("What is hiss?")

//Set description String
setDescription("Get killed by a creeper.")

//Add a parent advancement. The syntax is "modid:folder/path/to/the/advancement/then/filename"
addParent("triumph:example/root")

//Set the position
setPos(57,41)

//Hide the connection lines, so I can have a pretty shape
hideLines()

//Adds criteria named "killed_by_creeper" with the trigger type "minecraft:entity_killed_player". This function returns the criteria as an object
criteria = addCriteria("killed_by_creeper", "minecraft:entity_killed_player")

//Sets the required entity type for the criteria. This is the entity that the player must be killed by.
criteria.setEntityType("minecraft:creeper")