The Kurisu Pack Add-on for Phantom Breaker: Battle Grounds has 8 achievements worth 100 gamerscore.
Clear all of the stages playing as Kurisu
Get Kurisu's level to 25
Clear any stage in online co-op play while playing as Kurisu
Clear any stage with Kurisu
Level up with Kurisu
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Play until the very end of an online Battleground match as Kurisu
Raise any character's level to the maximum level