Sorry if I wasn't supposed to read this, as I haven't played the game yet ( other than the demo of course ) but I just can't resist a good brainteaser.
There are well above 100 characters here and 20 unique letters ( the ones missing are c, q and z ). The characters, in order of frequency are:
25 e
19 o
18 a
13 u
13 y
11 f
9 l
9 h
8 v
7 j
7 b
6 s
6 i
6 m
6 g
5 t
5 r
4 k
4 n
4 d
3 p
Without repeated words they become:
Freq. Letter
22 e
17 a
17 o
13 y
12 u
10 f
8 l
7 h
7 j
7 v
7 b
6 s
6 i
6 m
6 g
5 t
4 r
4 n
4 d
3 k
3 p
In Swedish, A is a much more frequent letter than in English, and C is a much less frequent ( all things considered ), so it seems likely that if it is some kind of anagram, it will be in Swedish; and it certainly seems to point that way.
Still let's continue looking into it for now.