We just released a small hotfix 0.8.1.4
Fixed Shield Slammer - it should work now
Fixed Sanctuary Relic (Priest upgrade) - it should heal friendly units now
Fixed issue where wrong region map textures was loaded
[i]We had a report about Archer dealing 0 damage, but could not reproduce. This could be due to the enemy wearing heavy armor and a big shield that are especially strong vs arrow damage. Flanking and high ground may increase damage enough to draw blood from a tanky enemy.[/i]