How to open "extremely sturdy" door?

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There are many doors in California described as "extremely sturdy":
No skill can help to open such doors. I have found some inventive advice to open them: placing a character with meson cannon lock in front of the door but I doubt it's the best way.
Also, explosive weapons don't help.
Best Answer
I have just started playing this game recently, and managed this feat with a Flux Reaver and Strength of 5
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How European front/exterior doors look like
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