The question has been asked, "How long would you have to XP grind to survive this?"
With the maximum 60% Will boost and an ancient resilience type effect, you only need to get to 2/3rds of the goal; less, because the other boosts give 124 Will on top of that (ignoring Crystal Mind) So your effective goalpost before effects is:
(target hp-(124*1.6))/1.6 = (target hp-198.4)/(1.6)
Including combat bonuses for an all-Will deck, you can get +10 Chance of Will XP without interfering with the bonus XP (again, without crystal mind), putting 11/14 of your XP into Will.
Gate to the Slags provides 24 XP / Energy with maximum XP Bonus, 18.86 of which goes into Will.
target substats = hp goal^2
Energy spent = target substats / 18.86
To get to a potential 2,000 hp you'd need to spend 67,226 Energy. Maybe 2 years if others provide you with all the buffs and items? I'm not certain of the best Energy/day, and note that this assumes you're maintaining Writhing Flesh and Introspection.
For a more realistic chance of surviving this, 2,500 hp would require much longer: 109,718 Energy. And three weeks before you'd finish, Kinak would introduce an Empowered 100,000 item only available in the Fang hideout.
In the beginning, men were mortal.