Wave 1 - You’re back in control of Shulk for this Time Attack however note that he doesn’t have Monado Eater or Armour available to him and as such, you’ll want to use his Talent Gauge on Buster only. For the first wave, you’re up against two Lv 65 Defensive/ONIONs and a Lv 68 Infernal Crocell. Be sure to focus the ONIONS down first and then unleash a Chain Attack on the Infernal Crocell if possible to clear this wave as quickly as possible.

Wave 2 - This wave is a lot tougher as you’ll be up against two Lv 67 M57/FAITHs and a Lv 70 Revolutionary Bifrons, the more difficult target here. You’ll notice immediately that Bifrons has a Spike Aura so focus on taking down it first and then use Chain Attacks to force Topple on it to disable the Spikes. Keep up the assault, keeping it Toppled at every given moment and use a Chain Attack as soon as it becomes available and once Bifrons is defeated, finish off the FAITHs.