Im doing a no protal run right now (with no bow side challenge, since i dont like them anyways) and it has been quite fun, not as bad as it sounds actually.
The fact that farms are so slow make you go for seeds ASAP which means swamp/mountain/plains in troll gear etc.

Another is no metal armor... thats plenty doable especially now, not a big increase in difficulty, but more fun to play.

In general the faster you try to play the more difficult it is, thats one nice thing about Valhaim.

Otherwise, yeah valheim plus probably is the way to go. I dont think you'll find much in console commands, except for like different passage of time (which could include tick rate for regen maybe).