Fane is so cool. Once he gets his mask he can transform to other races. Elf to corpse eat and gain skills and healing. Poison is his friend so either a geomancer or caster can poison him. Shoot him with poison dart or wand/staff. Poisin flasks he can drink for healing.
The play dead + chameleon + tactical retreat + scoundrel teleport gives him exceptional survivability. The pawn talent gives positioning supremacy. He's an awesome sauce shadowblade...Have him drop poison puddles or stand in poison. Far out man, the pawn, etc. Give him a bow and daggers. Boom. Don't take guerilla )