NGamer has recently reviewed Resident Evil: The Mercenaries 3D, giving the game a solid 82%. Some details have surfaced from this review thanks to Gamefaqs user innerhollow25. You can find all the new info summarized below. Oh, did I forgot to mention there’s also a sexy new pic of Jill in her alternate (Resident Evil 3: Nemesis) attire? Yeah, there’s that too.
Info: Only 8 characters (Chris, Claire, Wesker, Hunk, Barry, Jill, Rebecca and Jack)
Only 8 levels
9 loadouts (Every character can have each other’s loadouts and there is also a special 9th loadout as well)
4 missions on each level (Fist two missions are the normal/basic stuff from the other games. 3rd mission has some a big boss at the end of it. 4th mission makes you face off with waves of enemies, each wave completed gives you a few extra minutes on the clock, each wave will get harder)Weapon loadouts: Chris- Pistol, rifle, shotgun
Jill- Machine gun, knife, shotgun
Rebecca- Machine gun, grenade launcher, no third weapon
Claire- Pistol, grenade launcher,rifle
Hunk- Pistol, grenade launcher machine gun
Barry- Pistol, magnum, rifle
Jack- Bow, knife, rocket launcher
Wesker- Pistol, magnum, triple shotgun
Bonus- ???
[Source]