Mechanical Engineer Update

“

Where's your cloak now?

— The Engineer to Spy

”

The Mechanical Engineer Update is an unofficial community-made update by Samuel Pires and inspired by Diamo Lima's Guard Dog Update. It was released several months prior to the official Engineer Update.

Day 1

Day 1 introduced a new building called the Mothership. It appeared as a small team-colored blimp that acts as a Dispenser. The idea of the Mothership was it was easier to move around when changing spots.
The Mothership's downside was the gas used to fly was hydrogen, a flammable gas. If the Mothership was damaged it would explode and possibly injure both teammates and enemies.
A snapshot was featured of a new community map called cp_generator.

The Hellraiser was to be released on Day 2. It was a Nail Gun with a mini-container filled with radioactive gas provided by Mann Co. and nails manufactured by Saxton Hale's teeth. It was intended to give away cloaked Spy positions with a green radioactive glow.
The infamous achievement_idle map was added as a King of the Hill map.

The EMP was a projectile that the Engineer could throw to destroy Sticky Bombs, Sappers and other electronics.

The Machinist Chest was a new building that would allow Engineers to upgrade teammates' weapons with faster reloads, accessories, and other tweaks, lasting for a single life.
The bottom of Day 4 joked about the Engineer achievements, saying "Write every single one? OK, I give up!" and ending with a message from Samuel announcing that the update was indeed fake and explaining how he was inspired by Diogo Lima and his Guard Dog Update.

The Teleportal worked like a regular Teleporter, except the exit could be thrown to attach it to walls and ceilings, with the downside being a slower recharge time.
35 Engineer achievements were listed, mostly having to do with the new weapons and buildings.

The Engineer wrote some notes next to the images of the Mothership on Day 1. He referred to it as "Engineering Project #25" and said he was getting tired of packing up and redeploying his buildings, although it wouldn't give as much metal or health compared to the stock Dispenser.
On Day 2, written on the Hellraiser's Page, the yellow colored letters in the sentence "This masterpiece is a Radioactive nail Gun!", spell out the word "Railgun".
Day 5 was titled "The Fake was a Lie" rather than the famous quote from Portal that has since developed into a meme. It also had "Enjoy The Cake Update" at the bottom.
- You can also see what seems to be staples next to the "F" in "THE FAKE IS A LIE" and the "C" in "ENJOY THE CAKE UPDATE"