One of the tougher ways to go through the game, “Low Chaos“, is essentially a low kill playthrough (you cannot kill more than 20% of the enemies in the mission); however, Achievements and Trophies are awarded for killing no one (or letting their unconscious bodies come to harm), so there is a challenge in avoiding detection, while leaving enemies alive!
In the video above we show the many different ways to complete a mission.
Click on the version of the mission you wish (note – the “main” section of each mission is based off Low Chaos; Corvo ain’t Team Fortress 2’s Heavy!) and note that the High and Low Chaos versions of some stages have different arrangements in enemies, missions, and events.
What is “Medium Chaos”?
Medium chaos isn’t a game state — it’s merely there as a guide to playing the game on Low Chaos with an occasional kill or battle here and there (where it would make things easy to kill everyone).
- For Clean Hands, the Combat Sleep Dart is a very handy purchase, since that is Corvo’s only non-lethal ranged attack.
- Beware that in the mission Flooded District, Corvo will need to make a mandatory decision between two NPCs. One choice will always brand you as a killer, but incur no alerts; the second choice easily results in no fatalities, but it may be extremely difficult (if not impossible) to evade detection (unless you use Bend Time at maximum level at the right moment). Alternately, you can risk shooting the NPC with a Sleep Dart (resulting in a massive swarm of rats) but that will immediately disable the NPC and prevent it from respawning a version that can detect you.
Notes on Difficulty
There is no difficulty requirement for any achievement. You may accomplish them all on any difficulty setting you choose (and you may change the setting at any time).
A note on Easy Difficulty — Corvo does not need to be in “sneak mode” to choke or stealth kill enemies on Easy (he can be standing up; as long as the NPC is not aware of him, he can initiate either action).
You may find Easy difficulty the fastest / easiest way to do Clean Hands and Shadow / Ghost especially once you upgrade Corvo’s boots to have maximum stealth. Once you do, you can literally sprint up to unaware targets and take them down.