As of 4.2.3, GoldenEye: Source includes all weapon loadouts from GoldenEye 007 that can be formed with the weapons available. These loadouts have been augmented, often to include weapons previously unavailable and of appropriate power level.
These are weapon sets lovingly crafted individually by members of the GE:S team.
Arenas are eponymous sets where every weapon spawn produces the same weapon.
Loadouts may be changed at any time, and will take effect when the round changes. Use ge_restartround for an immediate round restart.