I'm on easiest difficulty and it destroys me still plus it regenerates it's health faster than I can harm it!

What is its level compared to yours?

Did you research it? I haven't done that part yet, but generally when a monster near your level is very difficult to injure (especially on easy), it probably means there are specific oils, bombs, or signs that you need to use to weaken it. Generally those weaknesses can be found in books, notes, dialogue, or in the bestiary.

If you're talking about the part where [spoilers] the Bloody Baron tells you about Ciri and you get to play as her for a bit, I just smashed X (light attack) on the Werewolf and it died quite easily.

I am using IGN, cursed oil, and a potion that increases my attack... Don't know what else to do. It's level 8 and I'm level 8 too, so I'd think it would be a lot easier than this.No... That was easy.

Guess I'm going to go back to old maps and try and complete everything... Although I wish I ran into more quests vs. little side things like bandit hideouts.

What works for me is looking for places of power. It gives you a nice advantage.

Aaah mate, yesterday i was about to smash my controller at this point.

In case you mean the werewolf in the cave below the house:

I died around 15 times but then i managed to beat this f*ck. Im playing on death march and beat it with level 4.

First you create "Cat" via alchemy so you dont have to hold the torch. At a certain point in the cave you will find the werewolf and wolfs around, so try luring the werewolf in the NEAR of the entrance and start circling around it. If you are too close to the entrance, the werewolf will run back to the wolfs, so CIRCLE AROUND it. Then you change to Axii-Sign to stun the werewolf. Only attack it, if it is stunned. If its barking at you, dont attack. You should only attack while it is stunned OR when the wolf is starting to howl. The howl will start the health-regeneration of the werewolf. At this point you can attack, maybe you can interrupt it here so it doesnt regenerate health. Run walk backwards until axii-cooldown is complete and go on. Additionally you can create this one bomb which blends enemys, if you have target-lock active on the werewolf you can hit it easily and then attack again. I was able to attack it 3-4 times with fast and 2-3 times with slow hard attacks while it was stunned.