Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Baby Steps (100 points)	Complete Tutorial.
Crystal Rain (30 points)	Collect 100 crystals.
Dag-On, Dag-Off (30 points)	Kill 200 Spawns of Dagon.
Deep One, Two, Three (15 points)	123 deep ones must die.
Down came the rain... (30 points)	Kill 1000 Spiderghouls.
Epic Awesome (90 points)	Choose an EPIC perk.
Extinguisher (30 points)	Kill 500 Fire Vampires.
Find Inventions (15 points)	Recover lost Tesla Backpack.
First Showdown (30 points)	Complete Chapter 1.
Kill it with Fire! (30 points)	Kill 50 Parasites.
Meta Upgrade (90 points)	Purchase a meta upgrade.
Polymurderous (30 points)	Kill 50 Polyps.
Second Showdown (30 points)	Complete Chapter 2.
Shoggoth Schmoggoth (30 points)	Kill 50 Shoggoths.
That's no squid (30 points)	Repel 100 Tentacles.
Third Showdown (30 points)	Complete Chapter 3.
War Pigeon (90 points)	Recover and Operate the Mech.
Wardenclyffe Victory (90 points)	Activate the Wardenclyffe and save the world.
Wardenclyffe Victory II (90 points)	Activate the Wardenclyffe and save the world in Aether Plane.
Wardenclyffe Victory III (90 points)	Activate the Wardenclyffe and save the world in Eldritch Plane.