[VariousRen]

I'm looking to build an advantage for a half-orc, half-troll, half-other, bad-at-fractions character and I've run into a grey area concerning Unkillable and Limited Use.

The character already has regeneration (Regular) and is looking to purchase Unkillable as part of their troll heritage, representing the ability of most trolls to resist and regenerate injuries that would incapacitate or kill most creatures (missing lungs, giant holes through them). The plan was take Unkillable 1 (Limited Uses, 2) to let them fight through normally-fatal injuries a couple of times a day. Limited Use gives non-attack advantages a duration of 1 minute, during which they get to auto-pass HT checks to not die and, importantly, not die automatically at -5xHP and beyond.

The thing I'm not sure of is what is suppose to happen at the end of that one minute when Unkillable 1 ends. Do I:
A) Make HT checks for each death threshold I would have passed, and auto die if I'm at -5xHP or beyond. Effectively I re-take all of the damage and suffer the normal effects.
B) Continue living as normal, making death checks at the normal thresholds if I'm damaged further. If at -5xHP any further injury would automatically kill me. Effectively Unkillable allowed me to dodge the critical effects of the injury when I suffered it.

This same question would also come up if Unkillable was negated temporarily or was switchable, which others may find useful in the future. My searches didn't turn up any official or generally accepted answers yet, so I thought it would be worth asking.