Super SwabbieG 5

MISSABLE

When:
During Part 2, when you are aboard LeChuck's ship.

Method:
Right at the start of Part 3, you'll have a mop and a bucket on screen just to the right of where you spawn. Pick this up, and clean up the huge gob of grease at the bottom of the stairs. The pirate zombie will then throw another gob down - clean it up again.

Repeat this another 18 times

Achievement unlocked!