I'm looking for suggestions on how to make the game more challenging. I'm doing a first play through on hard mode, and while it started out being quite difficult, it's certainly getting easier because I have become over leveled. Unfortunately once I hit level 6 or 7, I have managed to always be 1 level above the enemies. I have just finished Cyseal and began the forest at level 10.

The obvious first thing for me to do now is to skip a lot of the side quests. I love doing all the side quests, but I value a fun challenge above all else so I'm going to have to skip some of them so I can avoid the game throwing too much exp at me.

What are some other things I should avoid to keep things interesting? Any completely overpowered tactics or spells that I could do without? I could tone down shopping in some way to put a limit on resources. I could stop buying gear at shops and not craft weapons. Thoughts on invisibility potions? Thoughts and suggestions on these kinds of things are what I am looking for.