Instructions
Travel up the long staircase you start the Athens Town Square stage on after the stage begins. You start the level on this long staircase. Break open the doors on your left to find two chests full of red orbs.
Reach the top of the stairs. Face north and then turn left after a barrier appears to prevent you from turning back. Smash the building's door to get another chest containing a red orb.
Kill all the enemies in the courtyard and then go through the opened door to the north. Break the cracked walls to reveal a few more chests containing red orbs.
Make your way through the building until you see a woman fall off the balcony. Go back to the courtyard, collect her key and use it on the locked hatch on the roof of the northern building. In the new room, smash through a cracked wall to reveal the last chest containing a red orb.