Here is the full list of all 25 Spirits of Xanadu achievements.
Stay aboard the Xanadu
Become king of the zombies
Fly the Xanadu into a star
Obtain every page
Put every toilet seat up
Unlock the bonus mini-games
Scan the Xanadu with the Survey Bot
Beat the game in 10 minutes or less
Beat the game without dying
Fly the Xanadu back to Earth
Obtain every weapon
Destroy every cleaner bot
Eat every donut
Find and read "The Unusual Death of Governor Li"
Smoke yourself to death
Obtain every audiolog
Read every e-mail
Get killed by the environment
Boil away all the water and burn the toast
Experience an attack of flatulence
Get drunk
Score a basketball goal
Destroy a robot with the showers
Destroy 3 bots in 2 seconds or less
Get killed by the suicide droid