Map17: Mines (Prodoomer)

Another underground map without much room to maneuver, and some tricky jumps over lava pits. Most combat is close quarters and you won't always be able to determine what kinds of enemies are around the corner. As usual, keep a close eye on your automap so you can find the areas that hide monster closets. You can use Remote Control rockets to scout ahead, and Electric Bow and other attacks that can hit enemies around corners to clear out the opposition without exposing yourself to their line of fire.

Average Payout: 4,600 credits

Secrets
1. When you take the east branch of the intersection near the start, you will find a shallow lava pool with a pain elemental. Across the pool is a cage with imps. Go back a couple rooms and open the northeast corner of the alcove closest to the lava pool, and you can access the cage area and get some IR goggles.

2. Further along the same branch you will come to a passage where you must jump over a fireball-spewing lava river, kill a pain elemental, and press a switch. Directly east of the switch room is a secret alcove, but to get there you'll have to hop back across to a narrow ledge and then double jump through the false wall into the secret. It's guarded, so be careful.

3. After you get the red keycard you'll come to a fireball-spewing lava pit with an afrit. Look up and to the right for a false wall, from where an enemy is likely already shooting at you. Double jump up and collect the coins.

4. When you cross the lava pit after the one with Ring 33, you'll end up on a walkway with lava on both sides. Before the wooden doorframe, look to the right for a false wall. Jump through for an assortment of weapons.

5. Midway across the lava pit after the one containing Ring 33, there is a false wall to the north. Jumping through gets you the purple keycard. Continue through the level until you reach the end, but do not run up to the exit. Instead, step on the left square with the exit sign and return to the previous room. After a delay, the east door will open, and you can reach the purple door. Defeat the enemies and claim your Electric Zeus.

Rings
33 When you take the north branch and then go north again from secret #3, you'll see this ring floating over a deep lava pit. There are several ways to get this, but the easiest is to hurl some sandbags underneath the ring and cast Iron Prison on them. Then rocket jump to get out of the pit.

34 Take the west path from the intersection near the start. It's floating high in the air above a grenadier zombie. Rocket jump to reach it.

Secret Ring 2: Red
From the intersection near the start, take the east branch. Before the room with the 3 arch-viles, there's a small alcove to the right that you can jump into for some ammo. Examine your automap and you'll notice a small adjoining area on the west wall. Rocket jump against this side and you'll go through a fake wall and collect the red ring.