Hope the agony of putting up with her for all that time was worth it, though you can at least watch Boykin rip her apart once the achievement pops up. Of course, this being Dead Rising, even if you do manage this incredibly frustrating feat all you get is a measly 20 point achievement. This can lead to HOURS of lost storyline progress because you weren't able to get to a bathroom or wasted your last healing item on her. It basically turns the entire playthrough into one long god-awful Escort Mission that forces you to reload every time she dies. To get it you have to have Denyce, the very first survivor you encounter, attack and damage Sgt Boykin, one the last psychopaths in the game.
The Xbox One version makes it a little easier, since the machines software allows you to pick up from the exact same spot you left your game at if you dont start another game or app.
This game was released just near the end of the original one-year warranty for launch day consoles. In the early days of the 360, this ran a very real chance of giving you the Red Ring of Death. To make matters worse, since you couldn't save this meant running your X-Box that entire time. There are limited health items, no saving (not even with Save-Game Limits), no continues, 14 hours all in one shot. Your health drains every 1 minute and forty seconds. This is incredibly difficult because: one game day is 2 hours.
You may have to beat the game on Harder Than Hard or under conditions that would otherwise be a Self-Imposed Challenge. It might require you to clear the Brutal Bonus Level or defeat the nastiest Bonus Boss. Maybe it's impossible or nearly so without buying something with real money first. Often it's something absolutely no one would think to do.
It often needs to be unlocked in That One Level, during That One Sidequest (of which it is a Sub-Trope), or while fighting That One Boss. It can easily involve The Computer Is a Cheating Bastard, Luck-Based Mission, Fake Longevity, or Fake Difficulty, though in many cases, the difficulty is indeed legit. Of course, there are those who are apathetic about it, but they are unlikely to be hunting for these in the first place. Others delight in actually getting these. Some players loathe these with a passion. It's particularly jarring to players when most of them were easy, or at least fairly easy, to obtain. Related to Last Lousy Point, this is that one achievement (or trophy) that keeps you from true 100% Completion.