There's nothing particularly tricky about xenocrypts, provided you can find a good word list. But they should be marked as xenocrypts.
IOW, the language should be specified.
I remember banging my head against an unspecified xenocrypt for a good long time - I kept going back to it for weeks. Turned out to be the first two verses of Jaberwocky, translated into Italian. I don't know if it would have been easier, had I known it was Italian, since most of the words were invented.
Brillineggiava, ed i tovoli slati
girlavano ghimbanti nella vaba;
I borogovi eran tutti mimanti
e la moma radeva fuorigraba.
"Figliuolo mio, sta' attento al gibrovacco,
dagli artigli e dal morso lacerante;
fuggi l'uccello giuggiolo, e nel sacco
metti infine il frumioso bandifante".
-- Lewis Carroll, "Jabberwocky"