You managed 5 car rolls in a row from one crash.

Complete DNA Sequence 8.

Kill 5 guards while under the cover of a smoke screen bomb.

Complete DNA Sequence 5.

Complete DNA Sequence 4.

Assassinate 50 guards with the hidden blade.

Defeat 50 enemies with the Micro - 9mm

Defeat 75 enemies in a row without dying

Defeat ten enemies in a row with hand-to-hand combat

Defeat 30 enemies with the Wes - 44

Finish the game in Normal Mode

Defeat 30 enemies with the SAS - 12