To have a chance against Kurzen, we need his healing support neutralized.  He has gathered a large number of Medicine Men who heal his forces with Jungle Remedies and poison our fighters with Venom Fern Extracts.$B$BWe need those remedies and extracts for our own.  Search the Kurzen Compound - his Medicine Men and Jungle fighers will have the remedies, and the extracts are probably stowed in some of the camp's supply boxes.