Ultimate Destruction is a Single Player level in Q2. This level has the same geometry as Entering Death, most of the differences besides texturing are in regards to Enemy and Ammo placement. This level also has the same geometry as Harmony, though placement of Ammo and Weapons is entirely different.
Turn left and go through the doorway. Collect the Double-Barrelled Shotgun and Shells while killing the Grunt. Go through the doorway to the right and kill the 2 Grunts. Go through the doorway on the opposite side of the room. Kill the Ogre, Rottweiler, Enforcer and Spawn. Collect the Shells in the middle of the room and the 25 Health in the upper right corner. Go through the doorway to the left and turn left into the doorway near the end of the corridor. Kill the Grunt and Rottweiler while collecting the Rockets, then head into the next room across from the other doorway. Kill the Grunt and 2 Rottweilers while collecting the Rockets, Shells, and 25 Health. Go through the doorway on the upper left side of the room, then kill the Grunt while proceeding down the corridor to collect the Rockets. Turn left into the next doorway. Kill the 2 Grunts and cross the corridor to the next room. Collect the Shells on the right side and the Nails, Rocket Launcher, and Super Nailgun on the left side. Continue forward through the next doorway; then kill the 2 Grunts, Rottweiler and the Ogre. Turn right and follow the corridor to the end, collecting the Nails. Turn right into the next doorway and kill the 2 Grunts. Go through the room to the next doorway and kill the 3 Grunts. Continue down the corridor, collecting the Rockets, and go through the doorway at the end to kill a Fiend. Collect the Pentagram of Protection to the right.