This is the point at which most people lose track of the plot until they read the Story Page :P We're inside the Marine's mind, or dreams, or something, as he leaves this dying universe and looks for an alternative. The terminal uses Thoth's manner of speaking, white text with vaguely metaphysical and koan-like statements. Perhaps we can generalize this to "the Jjaro manner of speaking", in which case we are observing some sort of interior monologue as the Marine passes between universe, alone with only his Jjaro's influenced thoughts and dreams. He dreams of difficult, unbalanced combat, trying to overcome hordes of moving targets, of shifting paths over certain death, of unknown objectives and vague missions. Is this a warrior's nightmare?
There are a lot of strange things about this level. Why does the Enforcer prefer to attack the Ticks over you? Why is every copy of this level fully functional (all the teleporters are active, although most are unreachable)? What is the purpose of the fourth switch (nearest the terminal), which is never activated? But perhaps we will never know these things.