Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock	Type
A New Alliance	Complete the Lost and Abandoned mission	10
A Rival Silenced	Permanently defeat one of the Chosen	20
Born in the Darkness	Get four kills from Shadow mode with a Reaper in a single mission	10
Can't Stop the Fighting	Perform three offensive actions against the same target with a Skirmisher in a single turn	15
Circle of Psi	Raise a Templar to maximum Focus level, spend it all, and reach the max again in a single mission	20
Fully Operational Resistance	Raise XCOM's influence with all three factions to High in a single game	30
It Takes Two	Form a level 3 bond between two soldiers	20
No One Left Behind	Rescue a soldier who was captured by the Chosen	15
Weary Warriors	Complete a mission with all Tired soldiers and no casualties	20
Zombies in a Barrel	Get 15 Headshots against Lost in a single turn	10