Pros:

Great Map Design
Funny
Good Ending Fight. (I Liked the song...)

Cons:

No Cons, Well done.

Conclusion:

Great Campaign! I had lots of fun playing It!
You dun Good!

Enough to get a 99/100 ...

Pros:

Charm of Portal test chambers
Good Ideas (Ie, finding fireworks, ect. Placing them on Button)
Enough Weapons
Enough Ammo

Cons:

Sometimes hard to find things
Too dark (Some points)
Anti-Climatic Ending (No cake!!!??)
Got Boring (End)

Conclusion:

I liked this map, It was reminicant of Portal Test Chambers.
But, most of all - Portal IS a great game, and this is a good map.

Sometimes Its hard doing a rating. But, I think alot of work has gone in to this, therefore, this map gets 67/100.