Distrust

In order to get this achievement, you must not use the Crowbar option when selecting a locked door. You can only use the Key option and the Lockpick option. I'm not sure if the Shooting option counts as breaking, but I wouldn't risk it as getting through four zones is fairly tough while doing this as both the key and lockpick options take a fair amount of time to complete.

Bleep bloop. Achievement unlocked. Getting this achievement also unlocks Martin Brown for future games.