Being a dirty savescummer, I can't get any positive results out of certain Avulco ruins event that requires a Personal Shield.

It has taken me over 10 tries for each option (sneak and run), I believe the event may be bugged (for example, by having a much lower percentage to be successful than intended). Someone working on the code might want to check this one out.

http://i66.tinypic.com/6ekf89.jpg