If you are having trouble with the prison of elders (34) and you're on Kaliks Reborn without the Gjallarhorn (or it being upgraded). !!DO NOT GO TO YOUTUBE!! They all use G-horns which are very hard to come by. My fire team and i looked everywhere for a tactic that didn't involve the G-horn. And there was nothing. EVERY video used them.. So we found a way to beat him without it.!! Just go to the far back left without dying (you'll be on higher ground). And you sit up there and dont shoot Kaliks yet. Just kill EVERY ENEMY. So no more will spawn and that is your time to shoot him. You'll take him down 25% before he spawns in more troops. Now try and kill as many Archon Servants as possible (this is because he sucks them up and build up his health). So after killing those guys. Finish off the rest of the enemies without dying. After you do this a 2nd time the time to damage him will be increased. You'll get him down to less than half and a special target will appear. You MUST stop him from reaching his destination. After that. Just kill whatever is left. Keep killing the Archon Servants. And finally he wont spawn anymore enemies. Then you just unload everything you have. And you should beat him (: hope this helped anyone looking for help!!(: