E2M4: Clear & Unpleasant Danger (Eternity)

E2M4: Clear & Unpleasant Danger  is the fourth level of the episode replacement Eternity. It was designed by Bjorn Hermans and Holger Nathrath, and includes a custom music track.

Secrets

 * 1) Once you teleport back to the starting point from the presumed exit in the eastern part of the map, go back into the first hallway to find the northern section is now open. You will notice that a switch is on a pedestal here. Go around to the backside here and go in between the two torches to open up a hall, where you can open the next door, turn around, and flip the switch to open up the area further north. This area counts as three secrets. (sector 19)
 * 2) See Secret #1. (sector 21)
 * 3) See Secret #1. (sector 22)
 * 4) In the northernmost room with the crates, open the brown crate for a soul sphere, then open the wall behind it. Open the gray wall to the north for a passage, where you will have to open two more walls as it winds you to the exit. This passage counts for eight secrets total. (sector 42)
 * 5) See Secret #4. (sector 43)
 * 6) See Secret #4. (sector 44)
 * 7) See Secret #4. (sector 45)
 * 8) See Secret #4. (sector 46)
 * 9) See Secret #4. (sector 48)
 * 10) See Secret #4. (sector 49)
 * 11) See Secret #4. (sector 51)
 * 12) When you enter the first hall with damaging nukage, open the wall with the slime pouring out on the northern side to find a radiation suit. Press the wall behind it to lower a lift up to the secret area where the BFG9000 is. You can get up to three secrets going into this area. (sector 63)
 * 13) See Secret #12. (sector 64)
 * 14) See Secret #12. (sector 70)

Current records
The records for the map on the Doomed Speed Demos Archive are:

Things
This level contains the following numbers of things per skill level: