Guild challenges were tasks made available in Rome to the Assassin Ezio Auditore da Firenze, on the renovation of a major faction building. As challenges were completed, they gave various benefits and weapons to Ezio; the completion of two challenges resulted in the cost of hiring followers being reduced by half; five completed challenges granted new skills to their respective faction and a guild crest; and upon finishing all ten challenges, a new weapon became available at the Tiber Island headquarters.