If You complete the indicated task You'll get the allotted gamerscore.
Military Master (45) - Complete the advanced campaign.
Long Haul (25) - Attain player level 50.
Saved the World (25) - Complete the normal campaign.
Too Easy (25) - Win a Ranked Match without selecting any Commander Customization.
Battle of the Bears (10) - In the campaign, destroy a squad of POLARS with a squad of GRIZZLYS or vise-versa.
Humiliation (10) - In a Ranked Match, destroy an 8-troop strong unit in a single attack.
Mule Be Sorry (10) - In the campaign, destroy a loaded MULE squad.
Search and Destroy (10) - Win a Ranked Match by destroying all enemy squads or by your opponent surrendering.
Top Gun (10) - In the campaign, get a squad of EAGLES, FALCONS, or HUNTERS to Rank 8.
In Command (10) - Attain player level 30, unlocking all Commander Customization for Ranked Matches.
AYBABTU (10) - Win a Ranked Match by capturing an enemy base.
Snack Time (10) - In the campaign, destroy a squad of RABBITS with a squad of LYNX.