Prime cut event in the mire is challenging

Like normal I just choose random of the prime cut event from menu. Then I get teleported to the mire and start the event. Gulper is not a problem, but as more and more toads and mirelurk kings are spawning, it becomes difficult. The poison and the attack from the mirelurk king kill me once, even with pa my health dropped very fast and the last boss is the mirelurk queen. With vampire gatling gun and wasting a lot of ammo finally I able to solo the whole event. It is so much more difficult compared to another prime cut event which kill some rats, moles, and scorpions