If you have your key file and an idea of what the password is, I can also help you. I am currently working on some multibit classix wallets and have access to some very powerful GPU rigs. So anyway, the first thing you should try is to import the .key file and see if it is even encrypted at all. It might not be!
It will ask you for a password if it is.
Multibit classic didn't use 12 wallet words back then, so that's probably for something else!
I can bruteforce it for you if you want?
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