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