wormholewizards: The prologue mission can be relatively easy even on hard difficulty if you play it in sequence and understand each of the Signs. The Signs is really important, you MUST use them or you won't survive far especially when facing a horde of enemy. And your health will slowly regenerated (not sure outside the combat only or not), so be patience and plan your attack. This is not your ordinary hack a slash ala DMC game.
Yup, only out of combat.
Right now, combat routine seems to be:
1. start running circles around the enemies.
2. when one enemy gets a bit ahead of the pack, stun him with aard (i think it's aard) sign and hit him a few times.
3. go back to 1.
It is effective, it takes long and it is extremely silly. :(