Portal Epic Edition

Portal Epic Edition is a Portal mod created by Epic Backflip and released in June 17, 2020 on ModDB. Self-described as "the greatest shitpost ever known to man", this mod features same test chambers by GLaDOS with exponent changes, such as adding more hazards (Rocket Turrets and Sentry Turrets) and content from Half-Life 2 (with enemies like Barnacles and Manhacks, weapons like Crowbar and the SPAS-12 shotgun).

Map pack
Cognitive Breakdown Tests (or CBT) is a special map pack included with the mod for players who want a bigger challenge. It includes harder obstacles, such as a laser that disintegrates anything that touches it, blue goo that may instantly kill the player, a big ball pit, etc. This set of chambers includes everything from the main chambers, and new additions.

Achievements
Rewarded to players who already beat both campaigns. The style of achievements are a reminiscent of Xbox Live achievements, without Gamerscore. Below is listed some of the ways to get the achievements:
 * Second Amendment.
 * Get the SPAS-12 Shotgun in Chamber 2. (Main campaign)
 * Cake?
 * Shoot the glass of the observation room in Chamber 14 and do a portal bump to view the cake. (Main campaign)
 * Break my Stride.
 * Trap yourself in the end of Chamber 15. (Main campaign)
 * It's a Feature.
 * Jump into the nodraw pit on Chamber 20. (Bonus maps)
 * Epic Escape.
 * Get the good ending. (CBT Campaign)
 * Desperate.
 * Ride the secret elevator near the ballpit in Chamber 10. (CBT Campaign)
 * Free Man.
 * Get the good ending. (Main campaign)
 * 12.
 * Jump into the light pit in Chamber 11. (CBT Campaign)
 * Incinerated.
 * Get the bad ending. (Main campaign)