No missable achievements (plus 32 unknown)
Sign in with Steam or Xbox to track your progress, and:
Make Mr. Freeman stop the construction on the pool.
Watch the Devil's Cradle.
Find the camouflaged agent, even if it's too late for him.
Find Master Splinter.
Gather all the Profiles.
That box looks suspicious.
Find all the portraits of the guy who is watching us.
Solve the test questions.
Make the mime talk.
Read all the inscriptions in the cave.
Read all the epitaphs.
Gather all the VHSes.
Gather all the Classified Documents.
Gather all the Cassettes.
Gather all the Cartridges.