Half-Life 2: Zombie Master One Tunnel Map (Beta 1)

This is a nice map, made by Pna (pedro0930). The map itself seems to be rather large of size, with quite some objectives for you to do. Just make sure you do the objectives, before the zombies will kill you.
zm_onetunnel_b1 Map by Pna Mission objective for the survivors: - Find exit elevator. - Find 2 blue oildrum. - Find 3 valvewheels. - Find control room. - Find 3 battaries. - Hold control room 3 minutes. - Use the computer. - All survivo