Here is the full list of all 50 The Walking Dead: Survival Instinct achievements worth 1,000 gamerscore.
Chose to Travel at Least Once with Every Optional Survivor
Collected Every Stuffed Squirrel
Found Every Poster
Found Every Useable Vehicle
Completed the Game with Only 1 Firearm and 1 Bullet Left in Your Inventory
Arrived at Final Destination with Only Female Survivors
Completed 25 Optional Objectives
Entered Sherwood Without Any Survivors
Explored 25 Unmarked Travel Locations
Consumed 50 MREs
Restored Survivors 25 Times
Completed a Marked Destination on the Map without Taking Any Damage
Dismembered 250 Limbs
Dismembered All Limbs of 5 Walkers
Prevented 50 Walkers from Grabbing You
Killed Walkers Using Every Melee Weapon
Completed All Marked Destinations on the Map
Survived 5 Breakdowns
5 Survivors Were Killed While Scavenging
Distracted 50 Walkers with Items
Completed a Marked Destination on the Map Using Only the Crossbow
Completed a Marked Destination on the Map without Killing a Walker
Killed 5 Walkers in the Cabot Ridge Creek Bed
Shot a Walker with 10 Bolts without Killing It
Consumed 250 Fuel
Completed a Marked Destination on the Map Using Only Firearms
Completed the Final Marked Destination on the Map
Killed a Walker That Is Falling Due to Dismemberment
Prevented a Walker from Damaging You by Severing Its Attacking Limb
Killed Walkers Using Every Ranged Weapon
Arrived at Final Destination with Only Male Survivors
Completed the Third Act
Shot a Walker in the Knee with a Bolt
Completed the Second Act
Pulled a Bolt From a Walker Then Killed Them With It
Perished 13 Times
Killed 100 Walkers while Grappling
10 Walkers Were Killed with Saw Blades in the Logging Camp
Fired 300 Bullets
Explored an Unmarked Travel Location
Completed the First Act
Performed Execution Kills on 50 Walkers
Sprinted Until You're Exhausted 10 Times in One Level
Killed 5 Walkers with One Explosion
Killed 4 Walkers in a Single Grapple Sequence
Dismissed a Survivor
1 Optional Survivor Recruited
Killed Multiple Walkers with One Bullet
Completed a Marked Destination on the Map without Being Grabbed by a Walker
Completed the First Location