I found out some things finally. Crystal vision is only useful after you join a faction. Then you get different astral vision skills that highlight loot, enemies, plants, switches, and other useful things. It is really neat actually. The game gets a lot more fun after you join a faction.
Thank you Joxer for that hint on the legendary!
I have to say I like the riposte skill, because it works on animals. If you are blocking to stop them from getting 4 hits on you, if you let up and time the block, you automatically score a hit and stop their chain. It also destroys anybody in a duel, but that wasn't hard anyway.
Another random addition, has anyone tried the wheel lock minigame for opening a temple? That is the hardest minigame I have played in a video game in a long time. I just spun the wheels for 5 minutes until it worked. Anyone has any hints on what to do to make that easy, I would appreciate it (I have only found one so far).