Memory 01: 01 Graduation

First things first, head up to the rooftop and chat with Bellec to kick off the mission.

To get down into the area below without being seen, turn right and make your way across the windows. Keep going until you reach the side with the gargoyle water spouts, and use those to get down to the area with two tents.

Optional Objective: Three cover kills. To snag this, you'll want to take out the three guards from cover. Start by sneaking up behind the closest guard while using the boxes for cover. Wait until the other guards aren't looking, then pull him over the boxes.

Now, stand up to draw the attention of the next guard. Use his last known position to lure him towards you, then take him out from cover.

The last guard is just chilling by a pillar in the distance. You can easily get the final cover kill by sneaking around the outside of the area and taking cover next to him for a quick assassination.

With all the guards dealt with, walk up to the alarm bell and sabotage it. This will trigger a cutscene.

After the scene wraps up, assassinate the remaining thug and then loot the evidence from the marked corpse.

Optional Objective: Keep up with Bellec. This objective kicks in as a bunch of men enter the courtyard. Toss a Smoke Bomb to distract them, then follow Bellec up the side of the building. Keep going across the roof and through the building, then jump off the balcony to the rope below and cross over to the next roof.

Once Bellec drops to the ground, toss a Smoke Grenade. Aim it directly between the two guards (hold [R1]/[RB] to aim) and then take them both out.

Finally, follow Bellec through the streets.