While playing on the Beta server, I found out that you can shoot through walls. I've just tried it with Barret, but it seems that it also works with other weapons. But I couldn't find out how exactly you can shoot through walls. Sometimes it worked for me, sometimes it didn't. Is this a bug, or is it a feature? If it is, the bullets should lose much of their power when shooting through a wall, since you can still kill players through walls with a single barretshot.