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

Forge the Axe! (100 points): Complete the entire game.
Brutal Boost (20 points): Get 100% Titan Bonus.
Golden Boost (100 points): Get "MAX" Titan Bonus.
Trial of the Firstborn (25 points): Clear the first twenty waves in Trials of Tyris.
Trial of the Queen (50 points): Clear the first forty waves in Trials of Tyris.
Trial of the Snake Pit (100 points): Clear all 60 waves in Trials of Tyris.
Gnome Intimidator (5 points): Deliver 30 hits to those Gnomes, if you think you can.
Gnome Persecutor (10 points): Show your savvy by bringing your total Gnome hits to 60.
Gnome Oppressor (15 points): Hit Gnomes a total of 120 times to prove your prowess.
Island of Axir Expert (15 points): Complete "The Island of Axir" level with the "Battler's Blade" sword.
Diyar Highlands Expert (15 points): Complete "Diyar Highlands" level with the "Battler's Blade" sword.
Highland Fortress Expert (15 points): Complete the "Highland Fortress" level with the "Battler's Blade" sword.
Firstborn Expert (15 points): Complete the "Firstborn" level with the "Battler's Blade" sword.
Titan Wastelands Expert (15 points): Complete the "Titan Wastelands" level with the "Battler's Blade" sword.
Turtle Titan Expert (15 points): Complete the "Grave of the Turtle Titan" level with the "Battler's Blade" sword.
Second Born Expert (15 points): Complete the "Second Born" level with the "Battler's Blade" sword.
City of the Dead Expert (15 points): Complete the "City of the Dead" level with the "Battler's Blade" sword.
Queen of the Dead Expert (15 points): Complete the "Queen of the Dead" level with the "Battler's Blade" sword.
Fiends Path Expert (15 points): Complete the "Fiends Path" level with the "Battler's Blade" sword.
Fiend's Pet Expert (15 points): Complete the "Fiend's Pet" level with the "Battler's Blade" sword.
The Last Titan Expert (15 points): Complete "The Last Titan" level with the "Battler's Blade" sword.
Death=Adder Expert (50 points): Complete the "Death= Adder" level with the "Battler's Blade" sword.
Island of Axir Class A+ (15 points): Complete "Island of Axir" with an A+ ranking.
Diyar Class A+ (15 points): Complete "Diyar Highlands" with an A+ ranking.
Highland Fortress Class A+ (15 points): Complete "Highland Fortress" with an A+ ranking.
Firstborn Class A+ (15 points): Defeat "Firstborn" with an A+ ranking.
Titan Wastelands Class A+ (15 points): Complete "Titan Wastelands" with an A+ ranking.
Turtle Titan Class A+ (15 points): Complete "Grave of the Turtle Titan" with an A+ ranking.
Second Born Class A+ (15 points): Complete "Second Born" with an A+ ranking.
City of the Dead Class A+ (15 points): Complete "City of the Dead" with an A+ ranking.
Queen of the Dead Class A+ (15 points): Complete "Queen of the Dead" with an A+ ranking.
Fiends Path Class A+ (20 points): Complete "Fiends Path" with an A+ ranking.
Fiend's Pet Class A+ (20 points): Complete "Fiend's Pet" with an A+ ranking.
The Last Titan Class A+ (25 points): Complete "The Last Titan" with an A+ ranking.
Death=Adder Class A+ (35 points): Complete "Death=Adder" with an A+ ranking.
Abrax Master (20 points): Defeat 20 foes on the Abrax without getting dismounted.
Lynth Master (20 points): Defeat 20 foes on the Lynth without getting dismounted.
Krommath Master (20 points): Defeat 20 foes on the Krommath without getting dismounted.
Mirigore Master (20 points): Defeat 20 foes on the Mirigore without getting dismounted.

Additionally, there is one secret achievement, which is currently unknown:

Secret achievement (30 points): Unknown.