Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Arms Race (50 points)	Get over 100k points in Weapon Picker game mode.
Bloody Good Time (30 points)	Explode 50 creatures to gibs within the first 30 seconds of a level.
Booom (50 points)	Get over 75k points in Nukefism game mode.
Chapter 1 Complete (30 points)	Complete all Quests in Chapter 1.
Chapter 2 Complete (30 points)	Complete all Quests in Chapter 2.
Chapter 3 Complete (30 points)	Complete all Quests in Chapter 3.
Chapter 4 Complete (30 points)	Complete all Quests in Chapter 4.
Chapter 5 Complete (30 points)	Complete all Quests in Chapter 5.
Chapter 6 Complete (30 points)	Complete all Quests in Chapter 6.
Chapter 7 Complete (30 points)	Complete all Quests in Chapter 7.
Club Hardcore (80 points)	Complete the game in Hardcore difficulty.
Feel the Rush (50 points)	Get over 50k points in Rush game mode.
Grim Reaper (200 points)	Beat the game in Grim difficulty.
Home Wrecker (30 points)	Destroy over 500 nests.
Impaler (30 points)	Get 100 percent hit accuracy in Chapter 2 Quest 5.
Little Survivor (30 points)	Get over 250k points in Survival game mode.
Master of Chains (30 points)	Bounce Shock Chain powerup over 30 times.
Mr Survivor (50 points)	Get over 500k points in Survival game mode.
Not a Scratch (30 points)	Complete all Normal Quest levels with full health remaining.
Perky (50 points)	Unlock all Perks.
Quickly! (50 points)	Get over 250k points in Blitz game mode.
Smart Pack Rat (30 points)	Collect 50 Blowtorches.