How do you know they're shooting through walls? If they are, they likely have VIP. Is it possible that you don't notice the people that shoot you? So it LOOKS like they're shooting you through the walls? Just wondering, because it's not likely that you regularly play in games with tons of people shooting through walls, as far as I know, that's a VIP-only hack feature, that costs money. Like you said, not that many people have VIP, so you're probably just being sneaked up on and killed. Also, it's possible that it's just glitchers, who don't shoot through walls, just from within them.