Dead Rising 2

If you're playing through the story with someone just for this achievement, don't forget you can skip large periods of time by watching movies in the Cinema...
Movies start at 1, 3, 5, 7, & 9pm... (and Midnight) Each movie last an Hour & a half & ALWAYS ends an hour & a half after the movie start time... So if you go into the 1pm movie at 2pm, you're still going to exit the movie at 2:30, so it's best to go in as soon as the movie starts to skip the maximum amount of time...
You also can NOT skip the movie cut scene, if you skip it time will not advance, you just exit the movie, so you WILL need to watch the whole 10 second cut scene.

There is also an unlisted "Time share video" at midnight, it also lasts 1.5 hours.

https://1drv.ms/i/s!Akf6xS8fXjFmvRXEcQ1QKsYEzd8v?e=ZcqckC

Just remember, all you need is the main story missions, & do NOT need overtime mode.
The second player only really needs to be there for the story missions & it does not have to be done in 1 play through or even with the same player, Any multiplayer partner will do.
The most commonly missed part is the very first mission, but aside form that I recommend checking your progress after each case.

Last Advice.... SAVE OFTEN This port crashes ALL THE TIME... When using movies to skip time, I often drove down to the rock & saved after every movie or two, the second player does not even have to move, just take a motorbike or the SUV down to the rock & save then drive back & you'll still be early for the next movie.


If this guide needs additions or editing feel free to message me here on TA or on Xbox. If this guide helped you please give a thumbs up.

Complete all case files, and zombrex katey, with a partner and you will complete this. You need to give TK the zombrex to keep him alive After the army arrives and the base is overwhelmed by zombies. This does not have to be in one sitting, the wife and I completed this over a few sittings. Over time is not needed. You only need to have someone join right before completing any case file, just make sure it registers after each part. Zombrex don't seem to register after the first but I deemed needed for completion.

For the last boss: Have one person clearing zombies on the bottom, loaded up with weapons like light sabers and nail bats. Have one person fighting him hand to hand with the magazine for hand to hand and the magazine for healing. The rest of the inventory should be loaded up with Pain killers (Beer + Beer). Easy fight, just do endless Drop kicks on him and dodge if he gets too close. If you can back him into a corner he doesn't even dodge.

If it doesn't unlock apparently you can replay up to the first zombrex to unlock it, credit xShtanky. It unlocked fine for me.
JayD101 mentions that zombrex may not be needed to complete this achievement. Not confirmed yet

An alternative solution for the socially averse or people who are just having too much trouble with randoms:

You can two box this achievement somewhat reliably. The co-op partner only needs to be there for the end of the case file in order for progress to go up. That being said, this achievement is known to be pretty buggy in general. My advice would be to save before every case is completed, just in case progress doesn't go up. Make sure you check the achievement progress after every case file. Katie Zombrex missions do not count at all, so don't stress if progress doesn't move, *but* obviously they're required to progress the story. This achievement can also be earnt with different partners whenever you want.

If you do double box this achievement, my advice is to get the second profile to wait on the main menu until you're about to finish the case file, that way when they join the game they'll instantly teleport to you and you won't need to move a second character back and forth. Makes it far easier, as if you're playing by yourself until the very moment you don't need to.

Good luck!