The Arrow Pack Add-on for LEGO Batman 3: Beyond Gotham has 5 achievements worth 50 gamerscore.
Achievements they've won
Achievements they've not won
Set both Free Play characters as John Diggle and Felicity Smoak
Defeat 20 enemies on the Island by using a bow and arrow weapon
Complete Arrow level with all Minikits unlocked
Complete Arrow level
Complete Arrow level after achieving True Hero status