Getting to the Exit (3)

Duke Nukem 3D E1L04 walkthrough: find secrets, access Cell Blocks 1 & 2, and unlock the secret level E1L06.

Walkthrough:

1. Open the red door behind you. A Trooper is protected by four laser tripbombs. Close the door immediately, run backward, and let the alien trigger the bombs.
2. Proceed to the end of the bridge and open the map. This action reveals two secret compartments to your left and right.
3. [SECRET 7] Enter the left compartment to find Pipebombs.
4. [SECRET 8] Enter the right compartment to find an Atomic Health.
5. Return to the rotating room and take the left door. You will find a Large Medikit on the way.
6. Inside, kill the Pig Cop. You will find a Pistol clip and a switch that opens Cell Block 1.
7. Now, go to the right door. Kill the Pig Cop inside and take the Pipebomb.
8. Hit the switch that opens Cell Block 2.
9. Exit the rotating room and go to the showers area to enter Cell Block 1.
10. Inside Cell Block 1, locate a switch with four lights. Each activation opens and closes a different cell. The initial state has all three cells closed.
11. The first cell contains two Pistol clips and a Trooper.
12. The second cell contains a box of Shotgun Shells and two Troopers.
13. The third cell contains an RPG, a Large Medikit, and a Trooper.
14. At the end of Cell Block 1, blow up the yellow canisters to reveal an entrance to the control room.
15. Proceed to Cell Block 2. The same procedure applies as in Cell Block 1.
16. At the end of Cell Block 2, you will find two Pistol Ammo pickups.
17. The first cell in Cell Block 2 contains two Troopers and a box of Shotgun Shells.
18. The second cell in Cell Block 2 contains two Captains and a Large Medikit.
19. The third cell in Cell Block 2 has three Troopers inside and a poster on the wall.
20. Walk through the poster to enter a rocky tunnel.
21. In the tunnel, find three Pipebombs and a Large Medikit. Blow up the crack in the wall.
22. Continue down the tunnel to find three more Pipebombs and blow up the next wall.
23. You will emerge in a pipe. At the beginning of the pipe, find Shotgun Shells and a Large Medikit. Follow the tunnel to the end.
24. You will reach the Submarine Dock. Engage the two Octabrains, one Trooper, and one Captain on and around the submarine. Use the pipe for cover (press the cover button to crouch behind walls or objects) if necessary.
25. Before entering the water or the submarine, follow the ground to the left.
26. Deal with the Pig Cops in this area. Find Shotgun Shells on the ground and near the door.
27. Locate the Scuba Gear and a Large Medikit.
28. Find a switch near the large door that unlocks an entrance to the