My first map in hammer. I had this idea a long time before I got Portal 2. Don't expect too many details.
Click here to download Careless
Click here to download Careless
&
Click here to download Careless
Click here to download Careless
&

EDIT:
http://www.youtube.com/watch?v=2ktxXRhK09I&feature=youtu.be
EDIT2: now with the proper link
yishbarr wrote:
Are you sure this is it? Looks like you've mistaken the file.
This is the file I got when I followed the correct links 
yishbarr wrote:
Well, that should have been one big noticable glitch. I probably was in a hurry to update the map so I can fix the end door.
Always play through everything, without cheats/noclipping, before uploading a new version, no matter what. Testing a map is just vital to make sure your maps are as high quality as possible.