Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Alchemilla's Finest ( 10 points )	Defeated one Nurse.
Clear the Air ( 10 points )	Defeated one Smog.
Creeper Reaper ( 10 points )	Defeated one Swarm.
Eddie's Legacy ( 10 points )	Defeated one Feral.
Health Junkie ( 50 points )	Found all serums.
Josh's Gallery ( 50 points )	Found all photos.
Kaufmann's Handiwork ( 10 points )	Found one serum.
Lock 'n' Load ( 25 points )	Found rifle.
Lurk No More ( 10 points )	Defeated one Lurker.
Nursery Rhymes ( 50 points )	Found all the children's drawings.
Out of Order ( 10 points )	Defeated one Order member.
Shades of James ( 20 points )	Defeated one Siam.
Sightseeing ( 10 points )	Found one photo.
Split Personality ( 10 points )	Defeated one Schism.
The Old Gods... Haven't left this place ( 100 points )	Complete game on hard difficulty.
To The Point ( 10 points )	Defeated one Needler.