For taming / getting impregnated there really is no design that works the best or the worst. Sometimes when the Reaper Queen grabs you to impregnate you, it can drop you mid-animation and thus it thinks it impregnated you. So it burrows back into the ground never to be seen again. But based on my experiences on Official it’s a 50/50 chance of it impregnating you. After it impregnates you however you cannot take any radiation damage whatsoever. Otherwise it’ll die. But if all goes wrong down where Reaper Queens spawn you can eat Organic Polymer and kill yourself, the only set back to that is that the time for the Reaper King to be born will be reset but the levels will remain the same. For leveling it up I HIGHLY recommend you go to a river and run that river continuously for Spinos as they give you a lot of EXP. However you should have a mate make a room around a 2x2 - 4x4 so that the baby can have room to move around. But you also have to have Reaper Pheromone Glands to feed it.

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