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Giger's Alien had six-fingers hands, his tail and head were different, and more. Here you can find how he looks (it's a collectible figure but it's the best view):
Which language are you using in your game? If not english, you have to change files extensions to others, for example:
Spanish = .sp
French = .fr
Italian = .it
German = .ge
Polish = .pl
Do it with all files.
You have everything in the readme file (section "INSTALLATION") :)