Pros:

+ Looks real.
+ Finally, a new mod. Most new mods are mods that have been posted before.
+ Pretty good looking overall. Greyish steel.

Cons:

- The mad scientist called Cons has been murdered. He cannot create any Cons anymore.

Conclusion:

Awesome! Downloading right away.

Pros:

+ It's Portal. PORTAL!
+ REALLY good music.

Cons:

+ I could hear the One Bad Man music every now and then.

Conclusion:

Except for that one thing, it's awesome. Just wish i didn't hear One Bad Man through the awesome Portal music.

Pros:

It's two Desert Eagles. That's awesome!
Dubble the ammo before reloading.

Cons:

The second gun disappears in the left hand.
Arm glitches when picking it up. As stated somewhere, it's simple to undo by switching weapons, but it's still there

Conclusion:

Needs a fix here and there, but the main goal works. Awesome!

Pros:

Seen nothing like this before.
Long chapters.
Creative puzzle work with Grenade Launcher.
The goold ol' gas can puzzles are still in the campaign.

Cons:

AI is amazingly stupid. For example, i used a gas can to open a room behind glass and stood there so the bots would get close enough to pick it up. They just stood there for 2 seconds, walked away, came back, stand there for 2 seconds, walk away and on and on. (No, the only thing they had were pistols so they should have picked up some things.)
In chapter 2, there's a part where you walk over yellow bars when suddenly a part of a pipe falls down and alerts a horde. Nothing wrong with it, but when i try to jump to the next bar a zombie blocks my path which results in me hanging or falling. Very irritating.

Conclusion:

There are some Cons but it was nothing compared to the Pros. If the AI wasn't so stupid, i would've given it an 10.