Doom II levels|
Demo: UV - Not too well played, but it gets the point across - 100% of everything in a pretty slow time.
You are a single elite soldier, the only survivor after a failed attack on a city occupied by demons. You have noticed that the monsters have split into three "gangs": the Grunts, the Hell Knights, and the Mancubus. Each gang controls one part of the city, and they each have a distinct headquarters, where most of their members will be located. You'll recognize these headquarters easily; there is no road going in there, only pavement.
Your only hope of completing your mission, is to eliminate each gang in turn, kill their leader, and proceed to the next gang with a keycard you will find deep within the previous gang's headquarters. After all three gangs are eradicated, you must find and assassinate the hellish monster mastermind of the city.
Important: you will notice a map on the wall when you start the level - bring up your automap and you'll see the outline of the city, matching the map on the wall. It also shows what order to fight the gangs in.
This small-time gang has a large turf, but the members are all pretty weak. The Grunts consists of regular Zombiemen, Shotgun guys, Chaingunners, and Imps. Due to the Grunts always trying to stay up-to-date with other gangs' technology, their leader is said to be a prototype mechanical arachnid.
The Hell Knights
This gang consists of pink Demons and Hell Knights. Luckily they are quite few, but their headquarters is more heavily guarded than the Grunts. Also, remember to shoot all switches you can't hit normally.
The most heavy-duty gang in town, consising of the skeletal Revenants and the lumbering Mancubus. Their watchtower overlooks the nearby streets, blasting anyone bold enough to get too close. Their leader is said to be a humongous cyborg.
Many nasty rumors go about this guy; located somewhere deep within the heart of the city, he can easily deal with any intruder. Without the Mastermind, the monsters of the city can no longer be revived from the dead. A switch in his lair will also seal Hell's gateway into the city.
Assault (Version 2)
Based more heavily on Team17's oldie, Tower Assault, this level has you storming a heavily guarded tower. Every weapon except the BFG9000 is in the level, and it's quite small and simple in geometry, to give that old-school impression. Note that if you're playing ZDoom, you'll plummet to your death if you try to jump outside one of the balconies.
Demo: UV - How to beat the level, showing how to access the secret room as well.
Carnage (Version 2)
Demo: UV - for some reason, the game crashes when I record a demo while entering the final sector. If you play the demo, the game will exit when the player enters the last sector.
The most thought-out of my levels, bar only Assault. The level was inspired by the age-old Tower Assault by Team 17. The map is divided into sectors, or corridors. Each sector has some optional rooms, a control room, and a door to the next sector. Here's a rundown:
White doors - lead to optional rooms, holding enemies, ammo and health refills. You will need to visit these rooms if you want to survive, but they're all optional.
Green doors - lead to the Sectors' control rooms, where you'll find either a useful weapon, piece of equipment, or a keycard.
Red doors - lead to other sectors. Some require keycards to open, so visit the control rooms in each sector to find the cards.
If you find yourself overwhelmed by the enemies in a sector, choose a different path. Often you'll need weapons found in control rooms, or even optional rooms. Don't be shy to use saves the first times you play - it's quite long, but when you know the level, you'll breeze right through it.
Demo: UV - Finished in 1:06.
Pac-man in Doom! Run down the corridors collecting 100 rockets, while the CyberDemons go after you. Then hit the switch in the centre of the arena. If you have 100% items, you win! You can't play on I'm too young to die or Nightmare though, as you collect double ammo.
Demo: Nightmare - I made it through, probably because of all the ammo lying around...
My harder version of the game's final level, The Icon of Sin. The level is simple in design, and finding the switches to flick should be easy. About halfway through you'll raise some slow platforms, so if you don't see anything happening, just wait. When you destroy the Icon, you'll die, but still finish the level. The real challenge comes with the two highest difficulty levels - the Icon will spawn twice as many enemies.