The achievements fall into six groups.
FIRST NIGHTS - getting through the early ones and working out that leaving is the win. [spoiler!]
THE BET - whether you SECURE what is ON YOU or go back out for more. Every one of these is a decision, not a task.
THE DISTRICTS - at least one for every playable district (for the most part), keyed to whatever that district is actually about.
KNOCKING -Knockity Knock! Knock! Time to evacuate. Save civilians...if you can.
THE GORE - what the voxel destruction is for. All short, all loud.
THE LONG WAY - a streak ladder, three containment tiers, and one capstone.
Four are hidden. You can see their icons, but the words are blurred out, and that is how they will stay until ya unlock 'em!