I'm at the last guy in the tomb under firemoth and no matter wat i do he always has the same amount of health. Ive tried silver, enchanted, spells, and all of them in massive forms. Ive looked to see if there is something i need to collect and ive come up with nothing can anyone please give me some tips!!!!!!

Well how powerful is your character for starters? The lich in Firemoth is just about as powerful as Vivec if I recall correctly... it took a level 75 custom warrior complete with Trueflame and full Daedric enchanted with fortify heavy armour skill to beat him with me...

So my only advice to you really is to level up and get some excessively powerful equipment. Being a lich he probably has a lot of spell resistance, so melee might be a good idea, that's how I beat him.

I seem to remember beating him fairly easily with TGM

And I really hate the tracking AI of your companions in that plugin - they got stuck underwater when I did it. Seems they all had waterbreathing though because after going and killing the lich and going back, they were still there.

K, i just needed to know if he was insane or just glitchy or i was doing something wrong.
I rely on skill more than my leveling. I almost always manage to get out of a hard spot with everything i wanted, cept this damn guy.

My Character:
level 15
Custom Warrior
Equipment:
Lord's Mail
Ebony for the rest cept my Helm: Daedric Helm that has +40 personal, 150 AC

He's new

Ah, I see. I'm afraid there's no way you can beat that guy with skill alone when you have a character that weak, he has too much brute force. Get to a minimum of level 40 and get some better equip before facing him again I would think.

Like I said, it took the best enchanted heavy armour available and one of the best swords available complete with 100 skill in everything to beat the guy... that was on full +100 difficulty though, if you set it to -100 you could probably beat him with less.