Failed a stage.

Watched a replay.

Changed costumes and played a stage with each of the members of SEES (excluding Koromaru and Shinjiro).

Cleared a stage.

Played a tutorial.

Any weapon upgraded to the highest level.

Control A2 for the first time.

Achieve ending B.

1 hour played with 9S in a certain state.

Play your first hacking game.

Materials gathered at a hidden harvest point 10 times.

All Pods found.

Complete the flooded city.