Hello, DreadKnight. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
The potions: in the game I came across potions as "Minor Constition Potion" "Minor Strength Potion" etc. They are for increasing the particulair mentioned stat, but do they increase it permantly or temporarly?
Yes, they are usually for specific stats, and yes, they are usually temporary increased (the stats, I mean). There *are* permanent potions out there, but these are very, very rare. They have a special look.
With the needed level in alchemy plus with Holy Water, you can brew permanent potions yourself. But holy water is rare, too.
(Magical) spheres: On the first battlefield I came across a sphere with a weird 6-letter name more less on it, or a combination of 2 times 3 letters with a "-" between them. there is a store in the Battlefield wich also sells those spheres and alchemy plants, what are those things, and what's their use? what are alchemy plants useful for?
These Spheres can be used to enhance the character's equipment. I think you need a skill to be able to do that, but I'm not sure.
A right-klick on an equiment item should reveal round "slots" into which you can put the spheres (one per slot).
You need the alchemy plants to be able to do alchemy - brewing potions, that is - at all. You'll need a full set of these plants anyway, and the brewing process withdraws the needed plants from your inventory, so to say.
Raze has written & compiled in the tips section of this forum several texts you should read, because they contain useful information for you. Some of them are spoiler-free, some of them are not.
You can find a list of them
here.There's also an official strategy guide out there, in PDF, downloadable at RPGDot, if I remember correctly. If you rather want to explore the game yourself, I advice rather not to use it, or only at difficult points, because it is quite detailed.
Hope this helps a bit.
Alrik