Game have bug, when you can pass throught the blue barrier and skip 50-60% of whole game, this glitch I founded in 2016-17 and it works very easy. Remember - NPC can pass it You need to trigger guards coz they dont run away like normal peoples. You need make them pass into the barrier and take them. MOST IMPORTANT - You need to make some space between Altair and guard with some angle (I think 30-45* is good enought) and Altair will teleport to gates