In short: I was looking at some things on the Pressure wiki and I ended up seeing that the A-70 had several faces.

And one of those faces looked like the face of Stairwell 87.

But then I thought, "The Stairwell face might have an origin story similar to the Death Angel, where he was a concept from Blitz."

But then I went to look at the wiki for that giant creature called "the creature."

And according to the wiki, the creature is being made in 2023.

Here comes the theory:

What if that A-60 face was a foreshadowing for Stairwell 87?

What if, in fact, the A-60 faces are spoilers for future creatures, since several of his faces reference other creatures from Pressure.