SpongeBob SquarePants: Underpants Slam

Unlock Plankton as a playable character:
Complete all 9 Quest levels to play as Plankton.


SpongeBob SquarePants: Underpants Slam achievements:
Complete the following achievements to award the indicated amount
of Xbox Live Gamerscore points.

Wide Awake! (5 gamerscore points):
Achievement unlocked by breaking out of a Stun.

Superhero! (15 gamerscore points):
Achievement unlocked by using Super Moves 25 times.

SpongeBob ThousandPants (20 gamerscore points):
Achievement unlocked by collecting 1000 underpants.

Quest Complete (5 gamerscore points):
Achievement unlocked by completing a Quest Mode game.

Party Animal (15 gamerscore points):
Achievement unlocked by wining a multi-player game.

No Pants! (10 gamerscore points):
No pants in a multi-player game.

Jellyfisher (15 gamerscore points):
Achievement unlocked by beting 100 Jellyfish.

It (15 gamerscore points):
Be "it" for 50 seconds.

Clumsy! (10 gamerscore points):
Fall out of the level 50 times.

Fast Track (30 gamerscore points):
Achievement unlocked by completing all Time Trial levels.

Prospector (30 gamerscore points):
Achievement unlocked by collecting all the Gold Medals.

Masterful (30 gamerscore points):
Achievement unlocked by completing Quest mode with all five characters.