You WILL need a good sniper rifle other than spindle. The vanguard 1000 yard is excellent for PvE. Crouch at the back of your platform. Toss a grenade at the ogre that spawns closest to you. You then need to snipe your knight as soon as he spawns. (right after your ogre dies). Two head shots (or 4 body shots) with 1000 yard will suffice. Be listening for the runner to call out he has relic so you can immediately run to the titan bubble after your knight is down. Pretty much after that don't get smashed by the shade.