Too Human

On the final level of the campaign you will walk in "bloody water", when I died in this stuff it skipped the re-spawn cut scence. I decided I would die again to see if this was a glitch or if it always did it, again the cut scene was skipped. Not sure if this will work for anyone else but I thought I would post about it.

While going for this achievement you can keep an eye on your progress by going to "Stats" in the menu and cycling through the tabs to the last one, there it shows you how many times you've died.

Now, you can either play through the story and just work toward this without actually trying for it, sooner or later you'll get it. However if you just want to get this out the way then find an area with plenty of enemies and just let them keep killing you, watching the respawn sequence can get boring so you might want to watch some TV at the same time if you can.

If you have access to Xbox LIVE you could make this a little quicker by playing an online game by yourself, doing this will double the amount of enemies that appear in game and will also stop the "Wolves" (Human allies) from appearing in game to help you, doing it this way you could just leave your character getting killed without having to worry about your AI team mates killing them for you.