You cleared your first quest

Made your first item

You fought your first battle

This hateful being likes nothing more than to watch his faithful scythe swing about the place causing mayhem. If Gall hadn't showed up just in the nick of time, he may have stopped Kor and co. at the very first hurdle.

Finished Chapter 5

Obtained all types of items in vending machine

Hajime Hinata breaks through level 50

Found half of the Hidden Monokumas

Filled in every page of Chiaki's Report Card

Finished Chapter 2

Cleared a class trial without having to retry once

Filled in every page of Mikan's Report Card