If you max out the Metabolism skill before you attempt this quest, you won't be able to complete it! This will lock you out from ever getting the Collector quest.
Hello there, warrior! The hunt went as planned. You know, the water you prepared for me did really come in handy. By the way, how good are you at handling dehydration? Show me how long PMCs can stay without water.
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Objectives
Survive for 5 minutes while suffering from complete dehydration (Excluding Factory)
Alternatively if you play with friends, you can ask them to shoot you in the stomach, you will then quickly dehydrate, you can patch your stomach when you are in the dehydrated state.
Doing a 'Run-Through' will NOT count towards the "Survive and extract" objective. But if that happens, you can survive and extract any raid, in any map, regardless of where and when you did the main objective.