Accept Tom Hagen as your Consigliere.

Kill 150 mobsters only using firearms.

Unlock all classes (ranked only).

Finish the game on at least easy difficulty.

Kill 5 enemies with a chair.

Kill 2000 enemies (ranked play counts).

Kill 100 mobsters.

Max out all guards at a venue.

Eliminate a rival family by successfully bombing their compound.

Collect a total of $200 000 (ranked play counts) to unlock silver weapons in multiplayer.

On chapter IX, on the lift, destroy everything that is thrown at you.

Kill 250 People using shotguns (ranked play counts).

Control one crime ring.