Get eaten by the nidhogg after nearly allowing your opponent to do the same

Inflict Elemental Effects on enemies 50 times

Unlock all four Momentum bars as Batgirl, Robin, Nightwing, or Red Hood

Go to Gotham City General Hospital after visiting hours

Visit an unlikely source at Blackgate Penitentiary

Crash a film set and anger the director

Have your opponent hit more than 20 unforced errors in a match.

Don't hit a serve into the net for an entire match.

Complete a match.

Interrupt a presentation at the Monarch Theater

Uncover a new problem at S.T.A.R. Labs

Unlock all translation tiers of a Xenoglyph