The combat stats of this monster may have changed since the Evolution of Combat update, and have not yet been confirmed in the live game. You can help the community by verifying the information in-game and then
submit a report with your findings.
Torchers use a very long-ranged magic attack. This magic attack can also reach you if you have climbed the tower. If the gates are opened or destroyed, torchers can shoot through or over them and can hit your Void Knight.
These monsters block your path and you have to manually click to the side of them, then past them, to actually move around them.