For a complete visual walkthrough and tips on securing every achievement, check out these community guides:
: To reach 100% completion, you will need to backtrack from later chapters to earlier ones to find hidden schematics and "Familiar Faces" (special collectibles).
: Unlike the first game, you can now use a "Flow" ability to dash through gaps or teleport past enemies like Keepers. Sneak attacks are highly effective and can even restore some of your health.