The save was made before entering the room with the “bruised” Miller, here you can inject him with the antidote and get the achievement.

Then we run to save the delegates and on their table we select the last book for the “Tablet Collector” achievement.

Well, at the end we quietly take down the boss and here you have the Pacifist and the Slick (the main thing here is to wait for the end of the credits, they appear after them).

I recommend crawling quietly, invisibly, towards the delegates, and then away from them. For this purpose, the batteries in augmentations are not specifically pumped to full capacity, because... when you pump them, it is fully charged without using batteries.