I don't think a tourniquet's a good idea. It will only serve to hinder, and I don't think it's necessary her in Hell to keep you from losing a limb. Just try to cover the blood and not leave a trail.

*Wes removes his jacket and, without tearing it, ties the arms tightly around his shredded arm, making a sling.*

Perhaps we can find more serviceable weapons on other corpses. This level is littered with them. I can't even identify most of them.