The House of the Dead: Overkill/Walkthrough

Be forewarned. This walkthrough will walk you through this over the top game with things you need to be prepared for to unlock acheivements and also go through "Director's Cut" to see what was left out of the game that would has stopped you in your tracks.

Upgrading guns
Before you jump on it, you need to complete a level so you can use the cash to jack up your weapon. It will go from "Bronze" to "Gold". Here's the simple attributes you can use to decide what you want.
 * Recoil: It will reduce the amount of kick-back when you are firing and allow more comfortable steady aim to the gun you're carrying.
 * Fire rate: Increase the fire rate and the number of rounds per minute.
 * Clip size: Adding more ammo capacity of the weapon before it needs to be reloaded.
 * Damage: An important element of surviving. You should use it to save yourself the pain especially against the bosses you'll be shooting against.
 * Reload: As the speed and numbers of zombies increase, you need to seriously speed up reloading your weapon before you get smacked by them.

To use two weapons or a "Dual Wield Mode" you should be using both Wii Remotes at the ready. However, you need to complete both Story Mode and Director's Cut to enable this feature.

Pick-ups
Throughout the game, you should definitely use those pick-ups to succeed throughout the levels.
 * Slow mo-fo mode: It looks like green atoms connected together. Use it not to just slow it down but to really add more carnage and maximise high score thrills. If the music speeds up to normal speed, that means the slow mo-fo has been worned out.
 * Golden Brain: Even though it's difficult to spot, these play to the achievements. Just shoot it before you miss it because the game can run at a fast speed.
 * Health pack: Even though it adds to blocks to your health, you need it to survive a horde of monsters. Use it if your health is going to disappear.
 * Grenades: If you are desparate, if you shoot that icon, you have your grenades at your disposal. Only use it if you are facing too many zombies!

Director's Cut
If you have finish the normal mode, you get to see what's been cut from the main game with sections you haven't seen yet and more tougher, numerous enemies you'll encounter. The price is that your continues now has been limited, making it much harder to survive to the end.

Mini-games
These games are designed to break off the pain you have endured from the main game.
 * Stayin' alive: Survive against a horde of targets.
 * Victim support: Shoot the agressors to allow the civilians to escape.
 * Money shot 2: A competition to simply shoot targets for the highest score. Just don't try to shoot each other.

Boss Fights
No action game would be complete without a boss fight. Each level has a boss with its unique way of killing you. If you've been paying attention, the boss with the circle is the weak point. So shoot as much you can at its weak point and it should be easy enough to blow through a boss fight.