Achilles was once a Russian border agent. That is until the virus broke out. He quickly packed up his belongings and moved towards Chernarus.
After settling in Chernarus, Achilles began to hunt, fish and farm for survival. Soon he would set out to travel the country side of Chernarus and collect items on his way. Trading with other survivors, and helping others in need, Achilles is typically a neutral person. Not getting involved within affairs that were not his but helping anyone who crossed his path.
His main goal is to work towards a cure. He doesn't have the scientific skills to create his own so he has been looking for other survivors who may.