Railgun Spiral option...
	Various Achievements...

Defeat Xaero, the final Boss in Campaign mode. An option to toggle the Railgun Spiral will appear at the "Player Settings" menu.

Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Arena Eternal ( 40 points )	Played in 500 multiplayer matches.
Collect 'Em All ( 15 points )	Picked up one of every item.
First Frag ( 5 points )	Got a frag. Way to go!
Flag Runner ( 10 points )	Captured 3 flags in one match.
Gladiator ( 20 points )	Fragged 1000 opponents.
Hardcore ( 30 points )	Conquered the universe.
I Can Win ( 15 points )	Won 5 ranked matches.
Lord of the Arena ( 20 points )	Defeated Xaero in Campaign Mode.
This is Stroggos!! ( 10 points )	Knocked someone to their death.
Ultimate Humiliation ( 15 points )	Humiliated an opponent carrying the Quad Damage.
Weapons Expert ( 10 points )	Fragged an opponent with each weapon.
You're Comin' With Me ( 10 points )	Fragged someone after dying, before respawning.