Here is the full list of all 13 TOKI Juju Densetsu achievements worth 1,000 gamerscore.
Complete arcade mode on difficulty level: hardest
Complete arcade mode without using continues (normal difficulty or higher)
Collect all the 1UP bonuses in a session
Eliminate an enemy by jumping on his head
Collect 50 coins to earn an extra life! (arcade mode)
Reach a score of 70,000 points to earn an extra life! (arcade mode)
Beat the total score of 350 000 points (arcade mode)