For the final battle IGNORE the SoulStone. Just take care of Shadow Strom. As you hurt HIM, it hurts the stone. (Totally backwards from all the other stones I know.) When his 3rd version dies so does the stone.

Yes, you have to ‘kill’ him 3 times, BUT he’s only at 1/2 health the 2nd time and 1/4 health the 3rd time. If you’ve cleared that top level after you kill him run back around the corner to put some distance between you and the stone. This morning I did it on my ToS and was just straight back from the stone against the wall and had enough time to hit REST and heal up before his 2nd version came back and made it to me to start the fight.

I don’t know what self heals the PoM has, but I used all of mine on my ToS.

A ToS has 3, 2 short term that trickle in points and a Jolt one what gives you a 1000 back and I was using all of them pretty much each fight. Plus I burned through 10 Health and Mana pots in the Sewers and another 60 each after moving to Tortage for the 2nd half.

If you start with 99 of each you need you should make it to the end with some left over.