I'm assuming you mean dungeons plus a modern setting, then I'd suggest: www.novelupdates.com/series/seoul-stations-necromancer/ And http://www.novelupdates.com/series/evolution-theory-of-the-hunter/
most of those i would mention have been said above, what would still (barely) fitt would be: Arena Reincarnator King of the Battlefield Master Hunter K if you accept rrl the gam3 no respawn
Check out Korean novels.They have Fantasy+Modern elements-type novels www.novelupdates.com/ntype/korean-novel/