I don't think this player is a cheat (although anything is possible)
IMO the whole problem is zeroping. I hope you know how it works? only players with about 100+ pings can kill players by skipping the server, which is strange for me (because it seems that zeroping works selectively). That's why we see players with 100+ pings (from US, Chili...) with such strange high hits.
This is all my observation and my opinion of course...😉