Tell me how to kill three of the knights of hell in the foundry (Doom (2016))

This is the moment where two big turbines from red turn blue, kill one, two appear, and I knocked. You still have the chance to fight back in the foundry, to find at least a cans, but nowhere, except chainsaws don't even know what they will take. Hit from a plasma rifle. but not time to death. Can sit in shelters, there are two of them, a little longer, maybe they are each other's own dunk? Can you please tell me what the secret is?