Secret Closed Portal Labyrinth

[Ramoyald]

I found a well hidden portal near the labyrinth staff but it's closed and I don't know how to open it. When you drop into the room, turn around and look into the hole. you will see a platform and a closed portal. you can jump on the top part of the platform without dying but the portal stays closed. It might have a light cube connected to it somewhere that can only be broken with an explosive round but where is it? Anyone knows more about this portal?

https://steamcommunity.com/sharedfiles/filedetails/?id=3376993761

[Ramoyald]

Found another one near the Colosseum of ruins. This one is a bit harder to get to. First access the platform behind the portal that drops you on the small crystal checkpoint. Theres a small platform you can drop on in the corner that broken. Follow the path and jump on the bigger platform. Follow the path leading down and you will see this closed portal. Again no idea how to open it, jumping into it just kills you.

https://steamcommunity.com/sharedfiles/filedetails/?id=3376998202

[Evil-Striker]

All that is part of a sequence you have to go though in order to obtain a secret prize.

You start the sequence by shooting the light cube that is to the right of the master portal. Each time you do so, the next light cube in the sequence will appear somewhere else within the Labyrinth,

Every third light cube will be next to one of those deactivated portals. Shooting the cube will activate it so you can jump through the portal and continue.

In order to complete quest, you have to run the entire sequence without dying or using a checkpoint.

[Ramoyald]

oh so they are linked to that new gun, still didnt have all the requirements for the red glitch door. thanks for the info!