I thought "pass" was a kinda useless move but then I figured out its actually the key toavoid bleeding out and even actually win the bets.
Zver gives the best payoff. Orlok isn't really worth it as penalty of hitting the V card is way too high, while with Zver you can kind of cheese with the radar token.
Every round rush the row with radar, worst case scenario you lose 20-30 points.
Use the radar, flip cards outside the danger zone for an extra token.(but make sure you leave 3 cards untouched)
If you can work out 100% where the V card is, stake it for the win.
If not, just pass, you walk away with 30-40 points.