You played Arcade Battle 4 times.

You cleared Arcade Battle.

Kill a Hunter, Titan, and Warlock without dying in a PvP match.

Kill 100 Titans in PvP.

Max out all the skills that allow you to level up.

Finish the game in Hard Mode

Defeat 30 enemies with the PAK-80

Find all 100 treasures

Defeat four enemies with one explosion

Defeat ten enemies with grenades by aiming while hanging

Find 60 treasures

Throw back a grenade and defeat two enemies at once