Ezio and Giovanni vs Connor and Haythan
Ezio from Revelations and Giovanni from Lineage.
VS
Connor and Haythan from AC3.
Round 1: They are hunting each other in Masyaf from 11th century.
Everyone gets their standard weapons and gears.
Round 2: Swordfight.
Everyone gets their standard sword they used in their series.
Round 3: Melee fight.
Everyone gets their Hidden Blades and their standard melee weapons.
Final Round: Pure H2H.
The fights of Round 2,3 and 4 takes place on the Vault's entrance where Ezio fought Rodrigo.
Who wins? The Auditores or the Kenways?