Full list of all 15 The Long Reach achievements worth 1,000 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
Step away from Alan
Kill Alan
Get to the Core
Complete Bells Puzzle
Read every email
Drink from every cooler
Complete Institution 02 Scene
Complete Office Quest
Grab the gun
Complete Crackhouse Scene
Kill every body at Simon's Shop (ex. Kill Calvin)
Complete Diner Scene
Complete Institution 01 Scene
Fall into the vent in Alice's lab
Complete Simon's Shop Scene