Arowana Machine (rare)
This list only contains achievements that are not automatic (possible to miss even with all checklists completed) and aren't tied to places or events. Missable achievements specific to locations or main quests are located in the relevant checklists.
The Circle of Death
Retrieve your body after you die.
Cherish Our Resources
Retrieve 100 YoRHa android bodies.
Tools of the Trade / Inorganic Blade / Supreme Support Weapons
Upgrade a weapon / all weapons / all pods to maximum level.
A Scanner’s Power
Destroy 100 machines with hacking.
Machines vs. Machines
Destroy 50 machines using remote controlled machines.
The Power of Hate
Destroy 50 machines while in berserk mode.
What Are You Doing?
Move camera so as to look up 2B's skirt 10 times. A "successful" upskirt is when she swaps the camera away and moves backwards.
Ride animals for a total of 5 km.
A Round by the Pond
Catch 20 different fish.
Not That I Mind…
Use self-destruct to remove 9S's trousers and spend an hour in-game (without using tranporters, which reset the character).