7 Sins of Map Design.
You say that as though it hasn't happened.
Really? In a Portal map? Pictures PLEASE 
... or better, links!
There was some mod called Portal-Life that just added HL2 ragdolls to all the Portal maps without changing anything. It looked ugly and all the prop_ragdolls made the map start to lag if you shot a portal. 
No offense, Seaal, if you're here, but it wasn't a very good mod.
No offense, Seaal, if you're here, but it wasn't a very good mod.
O_o
OMG!! MY EYES!!! >.<
useful tools and stuff here on TWP 
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I literally loled when I read this... well done sir
My first experience of HL2 was near the end of Portal: Prelude. Now that there, with those manhacks, was one of the scariest shits I have ever played with.
Haha, Me? perfectly 
Really? I don't remember any manhacks in Portal Prelude...weren't the enemies in the ending rocket turrets?
Hmm, i remember (played that a LONG time ago) these manhacks, theyre coming when you defeated Glados
Hetzchase nailway is great, but I don't understand the storyline.
The thing about Hetzchase is that there really is no storyline. There was supposed to be this huge ambitious multiple-universe multiple-storyline plot, and Ian Boswell worked on disparate bits of this, but the Nailway he actually released stitched the parts he worked on together. This had a beneficial (but presumably unintended) side effect: it was completely unpredictable in an extremely engaging way. I kept playing just to see what crazy situation and setting I would be thrown into next.
Did you know that American English isn't even my first language? It's actually [spoiler]British English[/spoiler]
Released maps of note:
[spoiler]Versatile Diversity
L-Circuts[/spoiler]
Don't use one trigger multiple for 2 sides of the door with fire once only, because, if you walk away from the trigger, you're stuck. Don't use wall textures on floors. Don't use textures that don't fit you're environment.