Assassin's Creed: Director's Cut Edition PC Game Cheats

Conference Room:

After the credits show up at the end of the game you'll receive an access code for the computer at to the Animus. Once you crack the computer, you'll see an inbox, outbox and deleted message. Look at the inbox and select the entry regarding the conference room. Now you can go to the conference room and access it with the keypad.

Infinite Eagle Vision:
After finishing the game, you can use Eagle Vision inside the Animus.

Killing Without Consequences:
After finishing the game, you can destroy anyone inside the Animus.