GameRabies.com's CliffyB3 writes:
"Combining levels and enemies from both its predecessors, The Mercenaries 3D boasts a handful of new characters, abilities, and other special perks. It offers over two dozen missions that can be played alone or with a friend, side-by-side or online via WiFi. Unfortunately, it just doesn’t provide much depth or replay value – and that’s a tough pill to swallow, mostly considering its status as a full-priced 3DS game.
Now, Resident Evil fans – don’t write it off just yet. In fact, anyone that enjoyed The Mercenaries in the past RE games may be capable of swallowing that pill. Die-hard fans or anyone that stumbles on a reduced-price copy of The Mercenaries 3D should really consider giving it a chance, because the MSRP is really the only major flaw holding back this title from higher scores."