Gameplay
Like previous games in the House of the Dead series, Overkill is a rail shooter, with pre-determined character movement, while the shooting element under player control by pointing the Wii Remote at the screen, moving the aiming reticle. The player can point the reticle near the edge of the screen to move the camera angle slightly in that direction, allowing a further field of view known as "Danger Cam". The story mode can be played solo or with another human player, with one weapon or dual-wielding controls.
Players can also build up a combo meter by killing mutants to receive a score, with further points gained by performing head-shots, shooting bonus pickup, saving civilians and attaining multiple kills without missing a shot. If a player dies, points from his or her overall score can be spent to continue playing. At the end of each level, the player is awarded a grade that depends on his or her final score among other factors such as not dying, and accuracy of shots. Along with score bonuses, other pick ups scattered throughout levels include health packs, grenades and the "Slow Mo-Fo" pick up that puts everything into slow motion temporarily.
New guns and gun upgrades can be bought with cash earned from the player’s end of level score, between levels at the Gun Shop. Upon completing the story mode, Director’s Cut is unlocked providing the same game as story mode but with tougher enemies, extended levels and a limited amount of continues.
Read more about this topic: The House Of The Dead: Overkill