S-Rank Weapons

[Trev]

I keep hearing about S-Rank Weapons. Exactly what is an S-Rank Weapon and where can I get one?

Thanks
Trev

[Bit]

Challenge Mode.

http://www.pso-world.com/sections.php?op=viewarticle&artid=691

[Raziel_Kai]

Play Challenge mode, beat all the stages under 7 hours and you'll get an SRank weapon of your choice.
Takes time and patience and a good team of players.