No Errata
Q: To score Calculated Risk, does my fighter only have to move into a lethal hex and survive, or do they have to move into a lethal hex, out of that lethal hex, and survive?
A: The latter.
Q: Can I score Calculated Risk if the fighter’s Move action takes them through a lethal hex (which they survive) and then back into that lethal hex so that it takes them out of action?
A: No.
Q: Can I score Calculated Risk if the fighter’s Move action takes them through a lethal hex (which they survive) and then into a second lethal hex that takes them out of action?
A: Yes.