Prison Break: The Conspiracy

I had some trouble obtaining this achievement at 1st. If like me you started on Shark difficulty and you continue playing and you know you have lock picked 5+ doors or grates and still no joy then what I did was get to a point where you have to lock pick a door, unlock it and enter then press start and load last checkpoint. My achievement unlocked on my 4th attempt of rinse and repeat. The area I did this method was chapter 8 (definitely unlocked 20+ doors by this stage) where you wait on the stairs while 2 guards are getting ready to watch a football match on tv. If you are going for the invisible achievement do not follow this guide until your on a new playthrough as this will probably screw you over!!

This should unlock by or during chapter 4. Most story related missions require you to un-bolt vents or lock pick doors, just do it slowly, and the guards won't hear.

This achievement can be easily/quickly done at Chapter 2. After opening the water valve at the Asylum you'll need to enter a room straight at the corridor which requires you to lockpick a door. After you lockpick it, reload the checkpoint and repeat it 3x (As you have already lockpicked 2 times)