XCOM: Enemy Within achievements

40.43%
Apotheosis Denied
Deal with the newest global threat
43.26%
They Shall Not Pass
Eliminate all alien waves
45.39%
Regenerate This
Kill an elite enemy Medic with explosive damage in single player
56.03%
Elite Defense
Beat a new special mission without losing any assets
57.45%
Shieldbuster
Eliminate an enemy's shield and kill it on the same turn in single player
58.87%
Zom-B-Gone
Eradicate the infestation
69.50%
A Little Bit Alien
Modify a soldier in single player
75.18%
Who Needs Limbs?
Augment a soldier in single player
97.16%
Taking A Load Off
Stop a squad member from suffocating in single player