Guy travels around the world/legendary locations, meets the various tribes
The swordsmen picked up some weird book/artifact and when he dies, he resets to the same time and carries over with his ki/internal energy/knowledge accumulated. There are conspiracies (involving human sacrifices), powerful factions, some more even more powerful factions. Powerful and even more powerful rivals/teachers. Bit of the world revealed, revisited, updated. The person was the "frog in the well". Learns the things he didn't knew were happening when he was a low level grunt. Sees different perspective of the stuff he knew before.
MC powers up a bit too fast (novel is over 700 chapters long) and not 1/10 passed he already powered up A LOT.
MC trains a several trees (poison/skeleton), but skill usage is separate. Has an alter ego hero identity setup for different skill tree which uses to exploit the bad guys, whatever. That's about it, the only bland difference from regular novel