Hudson Entertainment is giving WiiWare its first (brief pause) first-person shooter in Onslaught, which also happens to be the first online, 4-player cooperative first-person shooter on WiiWare. In other words, FIRST!
Onslaught is pitched by Hudson as a futuristic sci-fi shooter, pitting a squad of up to four players in a battle against "mysterious creatures" while also saving a distant research colony. In other words, science fiction plot #017.
Looks like Onslaught uses Wii Remote point and shoot controls, with plenty of shake to keep your forearms toned. The WiiWare release is listed as "coming soon" which we'll interpret to mean "coming soon."