Masterchief versus Batman
Match 1- No armor, no weapons, no gadgets for either of them. It's a sparring match, meaning its not to the death. Takes place in a boxing ring.
Match 2- MC gets his Mark 5 armor, an MA5B assault rifle, a pistol and 2 frag grenades, with 5 spare AR clips and 10 spare clips for the pistol, no Cortana. Batman get's his standard utility belt and Nomax survival suit. Takes place in a Gotham alleyway, MC is trying to kill Bats without civilian casualties, Bats wants him sent to prison.
Match 3- MC gets his Mark 6 armor, Cortana, 4 plasma grenades, a plasma sword, and a Battle Rifle with 6 spare clips. Batman gets the experience from the last two matches (even if he died/was sent into a coma), schematics for the Mjolnir armor, and 2 hours of prep in the Bat cave.