Strategy:The Wall

Main Guide (v0.9.9.4)

Version Changes (v0.9.9.5)

Nothing significant to the level itself.

Version Changes (v0.9.9.6)

Monster AI is a bit different, making the level harder. Enemies can now fire/attack around corners and out of sight. Last strategy will need to be reworked.

Version Changes (v0.9.9.7)

Apparently the entire level strategy will be different, no rockets will be needed.

General Tactics

Base strategy posted by GinDiamond 15:00, June 19 2012 (EST).

The Wall can be very challenging if one does not understand the basic mechanics of monster movement, and the fact that walls can be destroyed with fire or plasma damage.

To start the Wall, situate yourself about 7 tiles away from either of the far left corners of the Wall:

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...########7.................
...########.65...............
...########...4..............
...########....3.............
...########.....2@...........

Then, you have to use your rockets to blow a hole in the Wall (aprx. 8 rockets). Try to keep the number of "pockets" low, so enemies can't hide out in them. Better yet, use the splash from rocket explosions to make yourself a little 2-tile nook to duck behind when things get rough. Try to make a 3-tile wide hole that is even with the nook on your side:

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...######@...................
...########..................
...########..................
...########..................

From here, use a shotgun (combat, tactical, double) to blow an enemy back if it comes too close. Tactical and double shotguns are best for it, normal would work too, but is not very reliable without points in SoB, Finess or Rel. Combat is actually not good for corner shooting, because you have pump AND reload per each shot. When an enemy is about 3 tiles from you (use the wait key), shoot them with a shotgun (or a rapid-fire weapon if you have the right traits):

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......BXX....................
...######@...................
...########..................
...########..................
...########..................

NOTE: Double shotguns, used this way, will easily take down a hell knight in three bangs.

This way, the enemy will be blown backward, and you'll hit any other close-by enemies. However, if the enemy is right up next to you like this:

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........B....................
...######@...................
...########..................
...########..................
...########..................

then you're screwed, because if you use a shotgun, it will blow them backward diagonally and then when they retaliate, the splash will destroy your nook. Use a rapid-fire weapon or a strong melee weapon.

If using rapid-fire, try to wait for an enemy to get in this position (you'll have to creep up out of your nook:)

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.........@...................
..B######....................
B..########..................
...########..................
...########..................

That way, you can use your rapid-fire weapon to pick them off without fear of enemy fire. When the enemy creeps up to your level, duck behind your nook, reload, and then corner-shoot like this:

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.............................
...BXXXXX....................
..B######@...................
...########..................
...########..................
...########..................

On higher difficulty, there are arch-viles resurrecting enemies. If you see it happening (corpses disappearing can be noticed even in grayed-out area), fire at the top border with rocket launcher - it will gib corpses, while preserving the Wall.

Once all of the enemies are dead (16, I think), you can reap the rewards on the far side behind the Wall.