Edit: forget the above, I managed to do it, the message says:
"To warm the hell you build"
Cool, thanks. It makes sense because of the lava and the mess that is left. Now, would it be correct to say that this was not made by Manfred? I mean, we know the original version which was uploaded on Adam Butcher's channel and that "original" version is diferrent of this "legacy" version... Also, that aggressive message... It makes me question that it was made by someone else within the ARG.
In the "original" version Manfred represents himself with the crow dad we know: a crow with glasses and brown eyes. But in this "legacy" version, that Manfred only appears below in the tomb level programming a dark version forest level. But then in the hospital there is another Manfred with green eyes and without glasses crying for "CROW", his daughter. And to make matters worse, the deformed crow that chases us in the "CROW" room level and on the second floor after activating the lever, he cries just like the second crow when we are close, but distorted. Furthermore, that crow guides us to a place in this version, while in the "original" it is Manfred who guides the player through different scenarios.
My point is... Are there multiple Manfreds? Or are they different entities?
Look, I'm almost sure that these messages are for Manfred, because on the screen where the squares are and that some have just started playing, the top word says "FATHER."
So I think that in some way OPUS Legacy is managed by Manfred's son and that they are trying to communicate with him, although it is only a theory