Came across a good Templar strategy with a bunch of fandoms last night.
Complete reverse if the far right strategy ( where relic holder holds left teleport and rest of team try and survive on the right will doing gradual damage).
so far left strategy is :
relic holder goes right and positions to block teleport and use relic shield to stay alive
rest of team go to left teleport block , pop a Titan bubble and basically destroy Templar by jumping in and out of bubble and firing gallahorn at him.we only had 1 go at him as I had to go get my daughter, but first time out we got really close. Just got to be careful to not jump in front of each other gallys, that was the only thing that denied us.
Guy who had done it claims 45 second kill. Just prepare well, pop synth, wait 5 mins before starting, so can pop another synth if needed. self res warlock on relic would help as well, just for the extra few seconds before relic holder is overwhelmed
until