The Unkillable Sellsword

A normal guy gets reincarnated as a random person in the world of ASOIAF. Thankfully, he got the powers of Zombieman from OPM. While his start was anything but nice, his powers after awakening allowed his survivability to rise considerably. As he was not a smart man in the past, he lives his life earning a living as a sellsword and assassin or even an investigator.

But in this world, Adam never gets a break.