The Dishwasher Dead Samurai

What this achievement means by "Complete" is not do every mission. Its actually just to complete the last level, "Final Showdown".

This can also be done in co-op contrary to belief. The catch is that only the host will get the achievement. So you will have to do it again with your partner being host.

Essentially what you could do is find someone who has the achievement already, have them do the second to last level "Boardroom Blitz" with you, and then do the last level "Final Showdown"(makes sure your host if playing co-op), without having played any of the other arcade levels.

[Boss Tips: "Dude on The Horse"]

The boss will come in 2 stages.
- First he will attack on his horse. You will need to press B right as he is about to hit you about 4 times.
- The second he will attack on the ground. When he jumps/teleports, use the arsenal and air juggle him in the air. His health will go down real quick with that.
- Also remember that when you co-op partner dies, pile drive a few zombies, and that should bring him back to life.

Thanks for reading, hope you the best of luck.

Everything Fal1phor said was right. BUT i ve also found another solution to do it yourself!!!!!! on the last stage, "Final Showdown" here are the steps:

1. When it starts, QUICKLY go left to the enemy then push down, x,x then x,x,y,y,y, do it ocassionally till they start sparking then input the command that appears over thier head. Whenever a zombie is close to you, DO NOT HESTITATE! push B and slam them, it also works for temporary invicibility.

2. when the guy starts charging you on his horse, do what Fal1phor said.

3. when the guys is off the horse, ignore all enemies and start warping up, up,up again and again and again. HERES THE KICKER! the guy (boss) will kill those 2 annoying assasins for you, when they re dead, then land, grab zombies and when the boss teleports above you, dont hestitate to shoot at him but! Keep a real close eyes on those zombies, they ll swat you, which is extremely annoying!

4: Whens its over... Kick back and pop a beer (or a soda if you re underage) and enjoy the pop up of [ 15 pts Master Of Arcade Dishwashing] achievment on your tv!

This one gave me a headache and ALMOST busted my controller.

Just a fare tip on the Final Showdown, which I did on my first try with this. Do the basic two controles; use a rubber band or anything on your 1st (Swift Blade warp) and kill with the 2nd. If your #2 dies, then just pause the game, unravel #1 and kill two zombies. Your 2nd will be revived. Pause again; ravel #1 and continue, till the Horseman (After 5 Freaks). Keep #1 warping and don't worry about #2 dying, because the Horseman will end up killing the zombies, which automatically revives #2. Now just keep shooting the Horseman (2nd stage) with the MG, it effects him when he tries to warp on you.

Watch the vid on the Horseman's 2nd stage. The video starts off with round 2 of baddies. All credit goes to zlLiQUiDlz.
I hope this helps :]