Yeah, this is one thing I can't understand :
the differences between the difficulty levels (from casual to nightmare) aren't really that big !?
Why is for example the casual difficulty also very dangerous ? (example with Zagan!)
WHAT exactly are the differences between the difficulty levels?
Is it only the HP bars of enemies or also their sight & hearing, their strength in melee/ranged/magic damage, their speed, the strength of the skills they used, ...
