Do you mean the fights are too difficult for you to get past them, or do you mean you're unable to progress any further? Every single area on the map is accessible in the current version of the game "18.0.0."I can't seem to get past Slkipstream / Colosseum / Wood Elf Village / Hayakawa / Magic Weavers. Am I missing something, or is this stuff just not implemented yet? I'm lvl 23 and not quite able to beat Jiangshi in the Training Area yet if that helps....
If you've unlocked Slipstreams, all you need to do is complete the advancement contract there; it's practically an unlosable freebie.
If you are struggling with the difficulty, use skills more often, such as Power Break and Blind Shot. Don't forget to upgrade your equipment. Increasing your attack or magic attack is very good early in the game. If you get a game over on a battle, the game gives you an opportunity to replay it with a buff, there also exists consumable soup that lets you buff your stats up to 30% before the battle begins.