You can open chutes in the crashed satellite if you turned it back online. All of them have some sort of reference, the naked (I think) woman in the first one is referred to later in the unknown facility on a poster with a naked demon-cow-woman.
There is a skull that reminds me of SCP-1123. There is a bottle of cola that reminds me of SCP-207, but it flashes, so there must be more going on there. Those red dogs remind me of SCP-939. There is a tiny Earth.
And there are those scary eyes, I first noticed them from the game files XD
There are also references to the last game(the first 10-103), and those are the cups, which you can break by shooting at them.
I have yet to figure out/find the code for the computer.