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