Entering Demon's Lair

Entering Demon's Lair is a Single Player level in Q2. This level has the same geometry as Evil Palace, though placement of Ammo and Weapons is entirely different.

Walkthrough
Turn left and collect the Double-Barrelled Shotgun before going through the doorway. Kill the 4 Grunts and collect the 25 Health on the right side of the room. Go through the doorway in the upper right corner. Turn right and kill the 2 Grunts before proceeding down the corridor. Turn left at the end into the next doorway. Kill the 3 Grunts and an Ogre while collecting the three 25 Health to the right. There are two doorways in the room. First go through the doorway straight ahead, then kill the Fiend and 2 Rottweilers. Collect the 3 Rockets. Return to the previous room and go through the doorway to your right. Kill the 3 Grunts and collect the 3 Shells. Turn around and enter the doorway on the far left corner. Kill the 2 Knights and the Scrag. Go through the doorway to the left on the opposite side of the room. Kill the 2 Rottweilers, then collect the Green Armor in the lower right corner and the 2 Shells on the left side. Ignore the doorway straight ahead and instead go through the doorway to your left, then kill the 3 Grunts. Go through the doorway on the opposite side of the room and turn left. Collect the Nails and go down the corridor to the doorway on your left. Kill the 4 Grunts and return to the corridor. Collect the Nails and go down the corridor to the doorway on your right at the end. Kill the Ogre and 2 Scrags. Collect the Nailgun to your left and go through the doorway straight ahead. Kill the 2 Fiends, then collect the Pentagram of Protection in the lower left corner. Return to either of the doorways you previously ignored, they meet up on the same wall in the next room. Collect the Grenade Launcher in the middle of the room, then kill the Spawn and 2 Zombies. Go through the doorway to your left, then kill the 2 Grunts and collect the three 25 Health on the left side of the room. Ignore the doorway straight ahead and instead go back to the previous room. Turn around and go through the doorway to the right. Kill the 2 Grunts and collect the Rockets. The doorway straight ahead leads to the same room as the ignored doorway, so go through it. Kill the 4 Grunts and the Fiend while collecting the 2 Nails. There are two doorways in the upper corners of this room, go through the doorway on the left corner and ignore the one on the right. Kill the 2 Grunts and the Ogre while collecting the three 25 Health. Go through the doorway on the left wall. Kill the Grunt to your left and the Grunt to your right. Ignore the doorway to your right and follow the left side of the corridor to the doorway. Kill the Fiend and 2 Zombies while collecting the 4 Rockets. Return to the corridor and go to the previously ignored doorway. Kill the 2 Knights and 2 Grunts. Go through the doorway on the opposite side of the room. Kill the 2 Fiends and a Spawn while collecting the two 25 Health, then return to the ignored doorway back in the large room with 2 Nails. Kill the 2 Rottweilers and collect the 2 Nails on the far side of the room. Kill the 2 Scrags and the Ogre while collecting the Rocket Launcher, then return to the previous room. Enter the doorway to the right and follow the corridor to the right. Turn right in the doorway to kill the Ogre and Scrag while collecting the three 25 Health. Go through the doorway on the opposite side of the room to kill 2 Knights and collect a Green Armor in the upper right corner.