Manhattan's Left-Overs secrets (Quake 1 custom map)

secret #1: A YA on top of the capsule. Could be reached by a strafe jump either from the first step above or from the sealed door above.

secret #2: A Super Shotgun behind the first lavafall. Get it by jumping from rocks to rocks before you reach the end of the first building.

secret #3: There is a small crate room in the second building containing a RA. To properly open it, open the crate-sealed door, look to the very right inside the room and you will see a square silhouette: shoot at it to open the door.

secret #4: In the lava-floored building, go to the first ogre's location and look up to find a button. Shoot it to open the door at the highest point in the area (beside the teleporter gate) to get the Pentagram power up.

secret #5: After teleporting from that room and landing, shoot the lava inside the small pool to open a vertical tunnel. Get in to get to the John Carmack room.