[quote=@clanjos]
1. Un's got like, a thousand heads. If Shade exists within range of game-playing range, he gets seen.
[/quote]

Shade is completely invisible in the shadows. Combine that with the fact that Shade never leaves the shadows and you get the fact that Un will not be able to see Shade.

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[quote=@clanjos]
2. As God of Conflict, Un knows when something comes into conflict with something else, as well as what the two things in conflict are. Since Shade has apparently been doing the corruption thing, he's come into conflict with the gods. QED, Un knows who he is.
[/quote]

This point however, is a lot more bullet proof. I submit to your superior logic, good sir, and will trouble you on this matter no further.