Ready, Set, Go!

Being able to lead a small band of intrepid survivors against the onslaught of Mutant Martial Artist Tortoises is an excellent skill for every post-apocalyptic leader. It is one that must be learned and honed. It must be carefully distilled from years of pre-apocolyptic leading.

Western Hermann's Tortoise, Wikipedia

It has a partner. A companion skill that no one likes to talk about.

After the Mutant Martial Artist Tortoises rise from the sewers to takeover the above world of roses, pleasant smells, and a distinct lack of human excrement, people will whisper about it behind closed doors. When they can find a building that still has its doors. And rooms.