I just learned about a driller trick. I saw another player dig a tunnel up above the caretaker and drop a c4 on its head at the start of each phase. 2 c4s shut down all the vents in a few seconds. I tried it myself and it totally feels like cheating. You can basically skip half the fight this way. 1 supply pod right next to you in the ceiling means you can skip all vent phases
This is the graybeard way! Even Korloks are sooo easy when your team shooting it all the time and as a driller dig a tunnel under the main thingy and when it opens just drill into it from below.