Here is the full list of all 12 Bionic Commando: Rearmed 2 achievements worth 200 gamerscore.
As the primary player, complete the game on hard difficulty.
Complete the game in coop mode.
As the primary player, complete all levels with both prestige upgrades equipped.
As the primary player, find all Yashichis.
As the primary player, kill 4 enemies with one barrel.
As the primary player, obtain all bionic arm upgrades as the primary player.
As the primary player, complete the game without jumping.
Defeat the final boss.
As the primary player, complete a level by only finishing off enemies with your bionics.
Defeat something huge.
Complete all challenge rooms.
Kill the miniboss in Puerto Cálao.