insignificance

I mean, aside from the already big names out there, there's not much other good action manhwas like this one to note of - but if you can list the ones you've already read I could probably recommend 3 manhwas to try out. Also, if you're a big reader at all, you should try out the webnovel for this, I finished it last week, it ends at just over 400 chapters and it's really, really good. Probably the best webnovel I've ever read.

superhuman battlefield is pretty good if u haven’t checked that one out

^ that Is a good rec., though there are a number of weird female characters that get kinda uncomfortably close to mc (and the relationship is weird but doesn't go anywhere (at least until chap 60 where I left off)).