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