E2M8: The Portals of Chaos (Heretic)

E2M8: The Portals of Chaos is the eighth level in the Hell's Maw episode of Heretic.

Walkthrough:

The level is structured so that there is a large path that goes in a circle on the outer bounds of the level, and an inner structure that is concealed by walls. The large path that is closer to the outside of the level contains generic monsters and alcoves of pickups. The inner structure is where the maulotar fight will take place. To reduce the chaos, clear out all of the monsters in the outer ring. Collect the items that are scattered around the map, these will be used to fight the boss battle. In one section of the outer ring, there will be a mound of land that is occupied by nitrogolem ghosts, and contains a crossbow. Get to the top of this mound and a compartment will open behind a wall of stone at the edge of the map. In this compartment there are some items including an enchanted sheild.

There's another rock wall with an open area behind it across from the stairs to the east. There is a crusher trap inside, and they can be artfully dodged in order to collect the pickups at the end.

Across from here, you will see a staircase. When ready, go up the stairs and collect the mystic urn at the top. Down the other side of the staircase is the entrance to the inner structure. Depending which skill you are on, you may have one maulotaur to fight or there may be multiple ones. When going down the staircase to the inner structure, make a beeline for the ring of invincibility. This will awake the maulotaurs. Circle around them in a way that will group them together. If you cannot group them together, then start by using the powered-up crossbow, and use the ring of invincibility to avoid damage from attacks on all sides. If you can group them together, use the powered-up hellstaff, which will rain upon the group of maulotaurs.

Another strategy which may require more skill (but is unlikely to cause any trouble to experienced players) is to quickly run from the starting point to the staircase connecting the inner and outer parts of the level. The walls between them will then lower and allow for a gigantic monster infighting. Run in big circles across the level, attracting the monsters to the central part and picking up weapons and items. By doing so, you will have Maulotaurs being accidentally hit by other monsters and fighting them back, providing you with a possibility to conserve ammo. With the use of this strategy the level can be easily completed even if you have started with only an Elvenwand, and if done perfectly, you will only have to fight Maulotaurs in the end. It is not even necessary to visit the little ammo caches adjacent to the outer part of the level.

When all of the maulotaurs are dead, the exit portals will lower and you can exit the episode.