Backrooms Shadow Fortress

Infinitis decide to investigate the backrooms, so they send multiple units, armed to the teeth, along with dimensional disruptors and inversion generators, they also bring a large amount of Element 115 and even Aether weapons.

The goal is for Infinitis to try and neutralize the backrooms dimension and then use it as their own personal secret hideout.
But before they can do that, they need to pacify the entities within and to rearrange and merge the multiple dimensional layers within this pocket dimension.

Here we see Shadow Fortress doing a patrol of the backrooms, armed with Ray Guns, CRBR-S's, Micro missile launchers, Death Machines with Pack-A-Punched ammo, Railgun snipers and Raygun Mark II's.
This is only one out of dozens upon dozens of units sent in, so far they've had immense luck in defeating various entities and even taken out some of the more powerful ones.

But there is still much to do before they have safely secured the entire backrooms and remoulded it to suit their own needs.

The dimensional tech they brought does have a profound effect on the rooms and already many entities have been forced to flee to other levels after the levels they were on were merged with the ones above.