Typo: "Asphodelos: The Third Circle" (post-completion cutscene)

[Eckardt]

Third line of dialogue from "???" is as follows:

???: Either the bird is even more of a failure than its creators cared to admit, or you are no mean trespassers.

Considering context, I assume that it should read as mere trespassers.

[Rongway]

"Mean" as in "average" or "dull". See especially adj1 definition 3b from Merriam-Webster: Mean Definition

mean adjective (1)
\ˈmēn\
Definition of mean (Entry 2 of 4)
1 : lacking distinction or eminence : humble
2 : lacking in mental discrimination : dull
3a : of poor, shabby, or inferior quality or status //mean city streets
b : worthy of little regard : contemptible —often used in negative constructions as a term of praise //no mean feat
4 : lacking dignity or honor : base //a mean motive
[...]

mean adjective (2)
\ˈmēn\
Definition of mean (Entry 3 of 4)
1 : occupying a middle position : intermediate in space, order, time, kind, or degree
2 : occupying a position about midway between extremes especially : being the mean of a set of values : average //the mean temperature