Here is the full list of all 12 Space Channel 5: Part 2 achievements.
Achieve 100% in Single Player Ulala's Dance Mode.
Achieve 25% in Single Player Ulala's Dance Mode.
Achieve 50% in Single Player Ulala's Dance Mode.
Clear Reports 1-6 in Single Player Story Mode.
Rescue Jaguar.
Rescue Space Michael.
Earn a perfect rating in any one Report in Single Player Story Mode.
Clear Report 1 in Single Player Story Mode.
Clear the Single Player Ulala's Dance Mode.
Clear Reports 1-6 in Single Player Story Mode for the 2nd World (Extra Mode).
Earn perfect ratings for all the Reports in Single Player Story Mode.
Clear all the hidden commands.