Tash is the sniper on Team Slayer, he can use close range weapons but prefers the sniping rifle. His cursed eye gives him the ability to look through glass anywhere as if he was standing behind it. He can only do this if he can see the glass clearly and if nothing is blocking it, so dont worry, he's not that much of a creep. The only way his target knows they are being watched is if they feel a tingle on the back of their neck or see the purple symbol on his eye on the glass.