to HT rolls made for survival at -HP or below, and on any HT roll where failure means instant death. If this bonus makes the difference between success and failure, you collapse, apparently dead (or disabled), but come to in the usual amount of time. A successful Diagnosis roll reveals the truth.
Make a self-control roll any time riches are offered – as payment for fair work, gains from adventure, spoils of crime, or just bait. If you fail, you do whatever it takes to get the payoff.