Just climb up and over onto the wall, then look down. He’ll send you over the wall and start off the attack. When you’re ready, approach the commando near the alley at the back of Loredo’s residence. You can either wait for it and do some last minute exploration, or meditate until midnight. We’re the infiltrator, so get ready to go once it’s dark. Once you agree to help Roche with the raid, he’ll go over the plan.