Finally i found a program named Resource Tuner v1.98 that can edit every datas in game .exe (in Avernum 1). Is only one problem, exe file don't support international characters (I'm working on it).
Next part of game texts, are lokated in .dat files, and they are not so friendly to edit ( only hex editor?). One good thing is that .dat files support international characters (I try with Polish characters).
Have fun!