i finished the game now i wanna go back to all the cities and finish unfinished quests etc.. i have access to all previous memories but i need to watch the 5 mins intro everytime (can u somehow skip this?) and also going for early memories means you dont have all the upgrades.

No, you can't skip the old man's rants.

Make a sandwich, use the toilet, or kick a jester in the meantime...

HSRP,

Send me an email at drego5.dc@gmail.com, and I'll send you a ZIP file with a saved game from inside Jerusalem just before the final assassination target. You'll have all the weapons, full health, and there are no flags collected or Templars killed.

Ah! The wonders of PC gaming...
But on the flipside, you have hackers...
And the constant need to upgrade...

Did you start a new game and play it exactly that way drego? With the full intention of making it available in such a circumstance?
I ind that pretty impressive...