Terrains
Here are terrains you can use for your PC copy of Worms Armageddon. I made them myself.
(How to Use)
Save the files in your
Microprose/WormsArmageddon/User/Imports Folder
To Access them during the game right click on the Terrain Generation Button while creating a new game.
Load the File then choose Centre, then start the game. Enjoy!

Andy Land
I didn't make this to make
Andy mad. I made it to make
him laugh his head off.
White Night Strike
This is one of my favorities.
If you feel like being stupid, blow up the airplanes.
Bubbles
Bubbles with worm related things in them. 
Crimson Sky
Crimson Sky is a cloudy level full of good hiding places.