1. Completed all content, killed Yagluth in early April 2021
2. Put about 200 hours into that world
3. Main melee was clubs, at about level 80-82
4. Bow level about 90
5. Running, woodcutting, and mining, all maxed (100)
6. Most time was spent running in virtually a straight line or filling up inventory with ore
7. I shot rocks for bow skill (indoors next to a fire) but all my other levels came naturally

While heavily provisioning myself, I maxed out running near the end of mountain stage and start of plains, with woodcutting and mining coming shortly thereafter. I never died once in all of the 200 hours, so I never had to regain any skill levels.