Full list of all 40 The Walking Dead: Season Two achievements worth 500 gamerscore.
The base game contains 8 achievements worth 100 Gamerscore, and there are 4 DLC packs containing 32 achievements worth 400 Gamerscore.
All achievements
Achievements they've won
Achievements they've not won
Complete Episode 1: "All That Remains"
Head out with the group.
Take care of yourself.
Get what you need.
Arrive at the cabin.
Meet new people.
Find a campsite.
Arrive at the shore.
Complete Episode 2: "A House Divided"
Settle things with a new friend.
Make it to the ski lodge.
Meet someone on a bridge
Find a way across the water.
Leave the cabin.
Talk to a stranger.
Help someone through a difficult time.
Invite some friends into the compound.
Get beaten down.
Commit larceny.
Make it through your first day.
Witness a murder.
Arrive at your new home.
Give what you got.
Complete Episode 3: "In Harm's Way"
Get separated from the group.
Learn new survival skills.
Return to the meeting place.
Reach the museum.
Find the Observation Deck.
Survive the attack.
Get back on the road.
Complete Episode 4: "Amid the Ruins"
Make it out alive.
Take a breather.
Stop for the night.
Reach the other side.
Make it through to morning.
Reach the terminus.
Find your way through.
Complete Episode 5: "No Going Back"