Knock off every Tripod during the Elevator Sequence

Kill 4 enemies with the same Ripper blade

Kill a Stalker with the Seeker Rifle while in Zoom Mode

Dismember the Lightspeed Boy Statue

Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up

Kill a guard with a broom.

Renovate 5 buildings in the Antico district.

Throw money in a well.

Replay a Memory.

Discover the Shrine in the Terme di Traiano.

Find 1 Artifact in 2012.

Find a secure place to hide and re-enter the Animus.

Attempt to access DNA Sequence 9 for the first time.