- Split-screen co-op (xbox gamepad + keyboard/mouse)
- Bot assistant ([spoiler]it helps you after "Score 500 points!" achievement is reached. It's not so smart but it can help you[/spoiler])
- Player selection menu (skin, control type)
- New soundtrack (Awesome Force)
- New enemies ([spoiler]including elites[/spoiler])
- New bosses
- New weapon ([spoiler]plasma blaster after 2nd boss instead of disintegrator[/spoiler])
- Voice announcer
- New palettes
- New logo
- New features
- New animations
- Updated some sprites
- Updated game mechanics
Enjoy your stay!
And don't forget to post bugs here if you find some.