Full list of all 12 Unbound Saga achievements worth 200 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox 360.
Assassinate 50 enemies while invisible.
Completed a full issue without taking any damage.
Completed 5 Story issues in Co-op mode.
Unlocked Lori's entire skill tree.
Completed a Story issue in Co-op mode.
Earned 75K points in Survival mode.
Defeated the final boss.
Unlocked Rick's entire skill tree.
Sustained a 6x multiplier for 60 seconds.
KO'ed 50 enemies with thrown objects.
KO'ed 100 enemies by throwing them against the panel edges.
Fully upgrade any skill.