I don't know if this is a bug or intentional but here's this-
In the memory 'An uneasy meeting' (where you eavesdrop on Tarik and Ahmet) , if you use an arrow storm right after the first cutscene, and Suleiman is about to live, he flinches and goes into open conflict with you. He is apparently unkillable, weapons, hookvlade manuevera and bombs do nothing. Counters all your punches and grabs and countering his punches do nothing. Apparently, he also says unique(?) dialog like "I should have trained more with father","Where did you learn to fight? A ship?" and "Nice move, terrible footwork"(so that means it was intentional?) Summoned assassins can't harm him and he follows you everywhere until you get into more conflicts.
So, anyone else knows about this or has it been reported before somewhere?