Here is the full list of all 17 CONCLUSE achievements.
Beat the entire game.
Get the plow started.
Unlock the safe in the sewer management room.
Find and play the floppy disk.
Bring the rat back to life by reattaching it's head.
Watch all three of the VHS tapes.
Look through the binocular in Cordova three times.
Solve the clock puzzle.
Check on the old lady in the subway.
Start a new game for the second time.
Discover the hidden sewer.
Start a new game for the fifth time.
Call home at every phone booth.
Call mom at every phone booth.
Call Carolyn at every phone booth.
Use the linker book to travel back to the Docks.
Take the boat from the dock back to Cordova.