Blighttown - p. 3 | Walkthrough Dark Souls Guide
Last update: 11 May 2016
At the top run over the platforms inside the "building".
Kill a ghoul inside and take the elevator down. You can now kill the parasite without a risk (from behind).
If you killed a worm already, you do not have to use a ladder to the right (but remember to collect an item he drops - it is a spell Pyromancy: Power Within). Instead you can go down the ramp. Warning! A barbarian with a club lurks at the bottom! The fight is tough, because you can't enter the tunnel - there is another ghoul inside. So you might try to lure the enemy up and if it is getting really bad, run away and climb up the ladder (a big enemy is not able to follow you then).
After killing the enemies, run into a tunnel.
On the other side go down the ladder [1] and go through fog. [2]
Before passing fog you can jump down on the platform to collect Whip. From this place you can easily return up.
Behind fog use two ladders and go down. Warning! In this area you'll by attacked by pairs of mosquitoes - these creatures fly from swamps and appear indefinitely.
Keep going on wooden walkways - you'll encounter a new enemy type: Cragspidera. Run towards him and quickly kill him before he can attack you.
You'll reach next platform and ladders - go down.
Look around - there is another blowdart warrior in the area. You'll find him at the end of the long bridge next to a giant root.
Near that enemy you can find Wanderer and Falchion sets behind wooden barrier.