I sent the question to FFG:
In the conversion kit, the Act I Skeleton Archer minion requires no surge for its Pierce 1 ability, but the Act II minion requires a surge for its Pierce 2 ability. Is this correct, or should the Pierce 2 ability for the Act II minion be surge-free?
Here's the answer I got:
Yes, the ability on the card is correct.
Creative Content Developer
Fantasy Flight Games