Blow up Barrel #1 and grab the Backpack.įollow the corridor around to the left and open the narrow door on the left side. Kill the Zombiemen in the cages on either side and then drop down to the room below. Leave the barrel on the starting platform as this is near the secret exit and it only opens for a few seconds. To get there you’ll need to destroy all 10 of the explosive barrels.
The first secret level can be found from Level 1.
