achievementsdeus-ex-human-revolution
I'm doing a new run in Deus Ex: Human Revolution (going for Pacifist and Foxiest of the Hounds) and I was wondering if the gas cylinders you find lying around count as the knock out gas found in the gas grenades or if it is lethal.
I'm in the opening sequence and using the cylinders seems to be the best way to deal with the mercenaries.
According to this thread at Xbox360Achievements.org, kills in the opening sequence do count towards the achievement.
Since my original link died, the IGN Strategize on Deus Ex: Human Revolution also states that kills during the opening (pre-augmentation) sequence do count against the Pacifist achievement.
Best Answer
The gas in them is non-lethal, so yes, enemies will be knocked out by the gas. But, if you actually throw or drop it on them, they will die.