Bugfixes + some extra mods for the new weapons

Improved sounds for hyperdisc + shredder. Hyperdiscs are now synced in deathmatch/TDM. Added trident barrel option for shredder. Added scatter ammo for hyperdisc. Dumbfire hyperdisc now has a faster rate of fire. Fixed some bugs with the hyperdisc. Terror Fortress has double health on nightmare mode. Teleporting inside a dreadnought kills you.