Here are some details, via the game’s official website:
About Lost Reavers
Enjoy cooperative online play in this Wii U-exclusive free-to-play digital game. It comes loaded with a “Multi-View Action System” not yet seen before. A new type of action game awaits. Get in on the mission now!
Bring Back Hidden Relics
The objective of Lost Reavers is to bring back “Relics,” unknown treasures hidden throughout the world. From ancient ruins to modern remains, Relics are hidden throughout various locations, and many an obstacle must be overcome in order to obtain them.
Unite With Friends
In order to efficiently bring back Relics, you can take on stages with friends. Provide each other cover, attack together, and take on even the mightiest of missions!
For example, the movement speed of the player carrying the Relic is slower than normal, and he cannot issue attacks. If he’s attacked, he’ll drop the Relic on the ground. If you’re protected by a friend, you’ll be able to safely clear the area.
Battle Huge Monsters
Depending on the stage and which route you choose to take, it’s possible you’ll reach a room where a huge monster awaits. These monsters are without mercy and attack intruders incessantly, but by uniting with friends, defeating the enemy is never impossible.
Multi-View Action System
While there are cases where the character you’re controlling specializes in shooting, you can freely switch between viewpoints through the unique “Multi-View Action System,” and from there can get a more accurate shot at the enemy without getting close.
A Japanese beta test is scheduled to commence within the coming days. The first official trailer provides a look at gameplay.
Watch the video below.