New weapon: Shredder. It launches lots of bouncy discs.
New weapon: Hyperdisc. It launches a really big, laser guided bouncy disc.
(Both are dropped by the dreadnought on Electron Storm)
Added a nightmare difficulty which doubles all enemy spawns (including bosses). It has its own scoreboards.
Gyrojet howitzer and flak cannon now have better detonation control when aiming with a mouse.
Scattergun shoots more projectiles but has a bit more scatter.
Tweaked some enemy spawns, stats and AI.
Dreadnought now has a particle effect on its engines.
Some UI fixes.