So, many people seem to be a bit lost in Rivellon so here's my (incomplete) "golden path" which should more or less guarantee that you always meet enemies at levels which are similar to your own (max two levels above or one level below your own). It also follows the story as I think it is "intended". Of course the game don't force you to do it that way but if you follow this way combat should be challenging and fun most/all of the time without being too hard or too easy (if one of both is nevertheless the case, you should just think about choosing another difficulty setting in general):
In Cyseal:
1) solve quests in Cyseal
2) enter the cave under the cementary
3) head out west of town until the lighthouse
4) head out south-west to the beach
5) enther Black Cove
6) head out north to until the cave to the north-western beach
8) head out north-west to the beach
9) enter E.'s cave
10) head out east to the trapped house
11) head out north-east to the cementary/church
12) head out north-north-east to the burning fields
13) enter the dungeon under the church
14) travel to Luculla forest/Silverglen -> click on the bridge in the north above the burning fields
In Luculla forest
1) enter Silverglen
2) head out south to the cabin of the White Witch
3) head out north until you find the spell for the cabin
4) enter the cabin of the White Witch
5) enter the cave
6) enter the lake and travel to Hiberheim
In Hiberheim
1) solve the puzzles in the cave
2) clear the main map of Hiberheim
3) enter the elemental forge
4) enter Boreas's castle
5) enter the prison
6) travel back to Silverglen/Luculla forest
In Luculla forest again:
1) enter Silverglen
2) head out south-south-east to the goblin paths
3) enter the Luculla mines
4) head out north-west for the Immaculate trials
5) head out north-east to the desert
6) head out south-east to the Immaculate territory/Sacred Stone
7) enter the Immaculate cathedral north of Sacred Stone
8) travel to the Phantom forest -> click on one of the two bridges in the south-east or east
In Phantom Forest
1) head south-east to Hunter's Edge
2) solve quests in Hunter's Edge
3) enter the Knight's tomb
4) solve the situation in Hunter's Edge
5) head out north-west to the cursed area
6) clear the whole area
...
Feel free to discuss or continue the "golden path" for the remaining Phantom Forest area (please in spoilers).
