The fight got really tough at 0:00 because I had to decide if I wanted to ADS or not. At 0:01, when the raid boss died, I had to watch out for the after-effect (kind of like oryx) incase the shank came back and wiped me out. Luckily even though I reloaded, he didn't come back because of the ADS shot I did. I believe hipfire kill will bring the shank back, need confirmation though. Edit: no cheese was used, but one guardian did help distract boomers.