Responses
http://www.mangago.zone/read-manga/kill_the_hero/
I don’t think he disguised as a Russian but I’m not sure... maybe
http://www.mangago.zone/read-manga/villain_to_kill/
Or
http://www.mangago.zone/read-manga/sss_class_suicide_hunter/
You can also check this list...
http://www.mangago.zone/home/mangalist/1046033/
Sorry I don’t know anything like the Russian part...
THANK YOUSSSSSS THANKIES SO MUCHHIESS
HI I JUST HOPE SOMEONE WOULD BE ABLE TO HELP ME~~~ I FORGOT THE TITLE OF A MANGA WHEREIN THE ML GO BACK TO THE PAST AFTER BEING BETRAYED. ITS KIND OF IN LINE WITH DUNGEONS, RANKING, LIKE IN GAMES. THEN, AFTER BEING ABLE TO GO BACK TO THE PAST, HE DECIDED TO KILL THE MAN WHO BETRAYED HIM. ALSO, I REMEMBER HE CAN SUMMON DEADS TOO LIKE BONES THEY LOOK LIKE THE UNDEAD, AND HE DISGUISED AS A WHITE HAIR RUSSIAN TO EXECUTE HIS PLAN.