Gather all the Cartridges.
Gather all the Cassettes.
Gather all the VHSes.
Gather all the Classified Documents.
Gather all the Profiles.
Solve the test questions.
Make the mime talk.
Make Mr. Freeman stop the construction on the pool.
Read all the epitaphs.
Find Master Splinter.
Watch the Devil's Cradle.
Read all the inscriptions in the cave.
That box looks suspicious.
Find the camouflaged agent, even if it's too late for him.
Find all the portraits of the guy who is watching us.