| This is non-canonical fan created material. |
Easy to Subdue is NOT an advantage in basic set.
Hard to Kill advantage has an inverse disadvantage Easy to Kill, so that the similarly-named Hard to Subdue advantage might have an inverse as well is an opinion some fans hold.
Unfit (-1 to stay conscious or avoid death) and Very Unfit (-2) are two ways to somewhat approximate it.
B158 Susceptible allows HT penalties to various things, and might also.
An August 2018 thread talked about estimating -2 per level, which would (under Susceptible mechanics) make unconsciousness a "Common" threat.
This contrasts with Immunity to Unconsciousness [30] as priced by Kromm, which treats unconsciousness as a "Very Common" threat, so possibly vulnerability to it might be worth -3 per level.