Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Gaelic hero (100 points): Defeat the game on Brave difficulty, without changing it.
Great scot (50 points): Defeat Mor'du.
Mopping up (35 points): Defeat the harpy guardian.
Taking out the trash (20 points): Defeat the rock golem guardian.
Dirty work (5 points): Cleanse the ring of stones.
Wealthy (40 points): Accumulate a total of 15,000 currency.
Affluent (25 points): Accumulate a total of 5,000 currency.
Minimum wage (15 points): Accumulate a total of 1,000 currency.
Brilliant (25 points): Solve all triplet puzzles.
Triple H's (10 points): Solve a triplet puzzle.
Ranged only (25 points): Complete a level without using your sword.
Get out of my way (25 points): As Elinor, charge 5 enemies with a single charge attack.
Mum's the word (15 points): Defeat 100 enemies as Queen Elinor.
All bunched up (25 points): As Merida, defeat 5 enemies with a single charged shot.
Super bow (25 points): Defeat 250 enemies using charged shot.
Charge it up (15 points): Defeat 100 enemies using charged shot.
Domination (25 points): Defeat 250 enemies using power attack.
Power hungry (15 points): Defeat 100 enemies using power attack.
Earthquake (25 points): Defeat 250 enemies using the earth charm.
Tremble (15 points): Defeat 100 enemies using the earth charm.
Hurricane (25 points): Defeat 250 enemies using the wind charm.
Breezy (15 points): Defeat 100 enemies using the wind charm.
Ice cold (25 points): Defeat 250 enemies using the ice charm.
Cooling off (15 points): Defeat 100 enemies using the ice charm.
On Fire (25 points): Defeat 250 enemies using the fire charm.
Heating up (15 points): Defeat 100 enemies using the fire charm.
Untouchable (40 points): As Merida, defeat 30 enemies in a row without taking damage.
Impressive (20 points): As Merida, defeat 15 enemies in a row without taking damage.
Clothes horse (25 points): Collect all outfits.
My fair lassie (10 points): Collect an outfit.
Swordtacular (25 points): Collect all swords.
Swordful (5 points): Collect a sword.
Bowlicious (25 points): Collect all bows.
Bowsome (5 points): Collect a bow.
Wall to wall carpeting (40 points): Complete all tapestries.
Throw rug (20 points): Complete a tapestry.
Carpet runner (5 points): Collect a tapestry piece.
Gotta snag 'em all (40 points): Purchase all upgrades.
Full of power (25 points): Purchase 15 upgrades.
Ante up (10 points): Purchase an upgrade.
Everyone knows it's windy (20 points): Find the wind charm.
Ice to see you (15 points): Find the ice charm.
Toasty (10 points): Find the fire charm.
Digging in the dirt (5 points): Find the earth charm.