I think you need to be a lot more specific in what spells actually killed you. Because unless you have ridiculously low HP, or are doing heavy damage while Blood Oathed, then a Lich can't two shot you with all 70's resists - it doesn't have high enough skills to do that.
What skill do you have on your template?
What is your HP?
Are you healing?
You should easily be able to stand with a Lich dumping on you and just heal through it with lesser heals/cure.
I've already started transitioning this toon to sampire (but I'd welcome comments on my 6x mage should I decide to play him on occasion)
Note: None of my skills are 120 yet...
GM Magery
GM Eval
GM Resist
GM Inscription
GM Wrestling
GM Tactics
Given this is a character last played in 2001 - aside from the armor I haven't gotten any jewelry with SDI/LMC - but those won't affect the damage incoming. Typical fight is me pulling a lich with either flamestrike or ebolt - typically their initial dump will take me to half, and while I *can* heal through, I've had them hit me with a 2nd salvo so fast I'm either dead or close to it... I'll freely admit it could be a bad approach, could be my lack of casting recovery/reduced casting time (indeed when I hit I can also two shot them)...
I can screenshot my gear if that'd help - I know this character was my dungeon crawler and never had any issues solo in all but the lowest levels of dungeons (again, Britannia/LL) - just struggling with the itemization and changes.
Critique away, I can take it!