DeadMenTellNoTales

Ok from the top of my head:  

• Deeper custimization
• Skill tree
• RPG elements
• 1:1 scale (holy shit)
• Dedicated stealth button (finally...AC1 di not cut it for me..)
• COOP
• parkour up and down button(no idea how this works.)
• No more counter kills(Kill streaks gone?)

This Blog could be just discussing new things in ACU, I dont mind speculation.