The Retribution Title update for Overwatch: Origins Edition has 6 achievements worth 90 gamerscore.
Complete Retribution (All Heroes) with 8 different heroes.
Complete Retribution with each of the 4 heroes.
Complete Retribution on Expert difficulty.
Complete Retribution on Hard difficulty.
Complete Retribution on Legendary difficulty.
Complete Retribution on Expert difficulty with no incapacitations.