Wormhole Rifle

The Wormhole Rifle is a weapon that appears in Stealing the Diamond during the "Unseen Burglar" pathway.

Use
The Wormhole Rifle (named Portal Gun in Legacy Version) is one of three options Henry can use when he needs to figure out how to get down to the Tunisian Diamond from a walkway above.

When chosen, Henry uses the Wormhole Rifle to create a portal underneath the diamond, and a second portal in front of him, just above the walkway. As soon as the second portal is created, the diamond falls into the first portal and emerges from the second portal, falling onto the walkway.

Unfortunately, the diamond is too heavy and the walkway breaks, causing Henry to fall down into the first portal. And since both portals are located above each other, Henry gets stuck in an endless fall in which he keeps falling into the first portal, out of the second, back into the first, etc.

Transcript
Henry: Aaaah (x7)

Fail Message
I'm surprised you weren't able to get down there with that amazing portal technology. It's pretty strange how those portal guns work. I mean it combines the top scientific processes of our time. the portal gun contains a flux quantum generator which propels energy blasts with energy volumes of 4.23 GW with an average speed of 25 m/s. this speed is most effective because it allows the energy to be conserved while still maintaining a speed that is appropriate. The external plastic coating on the portal gun is constructed of a high polymer fireproof carbon fiber. this prevents the intense energy of the portal gun from burning the hands of the user. The intense energy causes intense heat. Oh by the way if you want a medal/achievement click here. I've heard that scientists still do not know what happens if two portals are placed on top of one another. The last time that was attempted... Well I'm sure you heard about it on the news.

Trivia

 * The Wormhole Rifle is a reference to the Portal Gun in the Portal franchise, particularly in the Legacy Version where its alias and sprite were identical to its Portal counterparts, while the description also alludes to the item's design in said franchise. It was then redesigned in the remastered version to avoid copyright issues.
 * Despite the name change, it is still called a Portal gun in the fail description in the remake, possibly due to how the "Portal Gun" in this case was merely an archetype that includes the Wormhole Rifle. Interestingly, Wormholes are speculated to allow travel similar to portals, but most of their properties are yet to be explained.
 * The double portal trick mentioned in the fail message refers to both the fail itself and its in-game behavior - Players would fall at increasingly high velocities as they travel through them. This was used by some players to troll others during multiplayer sessions in Portal 2 or to solve specified puzzles in singleplayer.
 * The fail screen explicitly states that a hidden medal is located near the end of the text.
 * This fail has the longest message in the game.