2) That there are "european directives" applicable to this case, when I informed him more than a month ago that directives don't apply to private relations only to states. Clear lie.
Member states are required to enforce the directives. The Italian AML law is based on those directives.
It appears that you want to be obtuse about the intent of those directives. I have posted 3 legal opinions from Italian law firms that disagree with your "lawyer".
It would be interesting to know who the lawyer is because the AML directives also specifically apply to lawyers.

3) That he is going to keep my money "forever" ("or we will have to wait forever"). Confession that he is willing to appropriation my money no matter how many evidence there is that is mine. Thank you!
Nope - that is not what he said. He said that if you don't comply
with their interpretation of the law then they cannot release the funds. He even said he is keen to resolve it and close the account.
4) That he doesn't care for the absolute evidence that the money is mine and keep raising suspicions about my ownership that no honest person can raise, which is confirmation that these are just pretexts to keep my money "forever" (his words).
If he wants to gamble his exchange, his money and his freedom on a criminal court, I'll be forced to comply and make a criminal complaint.
Do it. Laying a complaint with the authorities and providing them with your identity is one way of resolving it.

There is nothing we can do. For sure the law and security prevails on all our arguments.
Either the customer provides to us, or to the authorities, his/her Id or we will have to wait forever. Also, let's assume we will release the coins, without following the rules.... the same person could come back to us claiming a hack and sue us for negligence...... I wouldn't be surprise.....
Believe me, I'm the first one that would like to see this saga ending and close the account.....
Isn't strange he/she threatening us to go to the authorities, talking about jail sentences etc. and non acting accordingly?

?
Quite strange I would say.... or,normal if he/she is not the account owner....
I still hope this is not the case but, so far, everything is pointing in that direction.....Will see....
Threatening legal action is usually bullshit. This is what happened with the last person that threatened legal action in a thread that I took an interest in.
https://bitcointalk.org/index.php?topic=4679939