This mc is pretty dumb for not having any sort of protection, since it's possible to give him a deadly wound if it's a total surprise to him
The guy should wear at least some light-armor e.g. made from some fantasy beasts tough skin, which could protect from sword slashes and arrows at least. He trusts his time-stop ability way too much imo
It's no stupid to be surprised/wounded once, but if he doesn't learn from that, then he's really just an imbecile with a cheat