I've been working on restoring thin walls and shatterables. Like my previous post, "game feel" is a big concern right now, I want things to have a punchy sound and visual effect to make things feel weighty.
Additionally, when glass smashes it now creates a AI sound node, so unalerted enemies will now come to investigate. You can use this to distract an enemy before moving in and either taking them out at close range, or taking out another without raising an alarm.
Only certain weapons will have this wall penetrating power; at the moment, the powerful loud weapons like assault rifles and shotguns. This is to give them an fighting chance against the suppressed weapons, so the player's choice isn't so one sided.