Step one: go on a reaper killing spree and try not to die in the process

Step two: trap a reaper queen in a square made of Adobe dino gates

Step three: get your army of bulbdogs every sane player has

Step four: use the kung-fu and beat the absolute Rice out of it

Step five: get impregnated

Step six: go on a killing spree of non-reapers to give the alien residing in your chest some exp

Step seven: when the reaper baby is about to hatch eat a pheromone from one of the reapers you killed and be in an enclosed space so it don't run off. Make sure you got a lot of meat. You should get it from the reaper corpses.

More Reaper Taming & KO Tips