There are ten secret achievements you can unlock for an additional 140 gamer points in Mortal Kombat (aka Mortal Kombat 9, the 2011 version) for the Xbox 360.
Check out my other guide if you’re looking for the full list of achievements for Mortal Kombat on the Xbox 360.
Best…Alternate…Ever! (10 points) – Unlock Mileena’s 3rd Alternate Costume
Brotherhood of Shadow (20 points) – Discover and fight Hidden Kombatant 4 in Arcade Ladder
Cold Fusion (20 points) – Unlock Hidden Fighter “Cyber Sub-Zero”
Complet-ality (10 points) – Perform 1 of each type of “-ality”
Finish Him? (10 points) – Perform any fighter’s hidden finishing move
Hide and Seek (10 points) – Discover and fight Hidden Kombatant 2 in Arcade Ladder
Pit Master (10 points) – Discover and fight Hidden Kombatant 3 in Arcade Ladder
Quan-Tease (20 points) – Unlock Hidden Fighter “Quan Chi”
Ultimate Humiliation (20 points) – Perform every fighter’s hidden finishing move
You Found Me! (10 points) – Discover and fight Hidden Kombatant 1 in Arcade Ladder
Check out my other guide if you need help finding the Hidden Kombatants for these hidden achievements.