Class 1-A vs. Ryuko Tsuchikawa

Ryuko Tsuchikawa vs. Class 1-A is a battle fought between the Pussycats member, Pixie-Bob against the students of Class 1-A.

Battle
As the students attempted to board the buses, Pixie-Bob leaped down in front of them and blocked them with a sinister grin. She pressed her hands to the ground and sent a surge of earth towards them; pushing the entire class off of the cliff and into the Beast's Forest.

Picking themselves off the ground, Class 1-A started the trek towards the distant Forest Lodge. Minoru took the lead in his desparation to reach the toilet and was the first to encounter one of Pixie-Bob's Earth Beasts.

Koji attempted to use his Anivoice to communicate with the huge beast but the creature's lack of response caused Izuku to realize that it was no living animal they were facing but an artificial creation manipulated by Pixie-Bob.

Izuku activates Full Cowl as Shoto swifty freezes the Earth Beast in its tracks. Tenya leaps into the action and destroys one of the Earth Beast's limbss with a Recipro Burst-enhanced kick while Katsuki destroys the other half with an Explosion. With the creature immobilized and defenseless, Izuku performed the finishing blow with a smash that destroyed the entire creature.

Mezo and Kyoka use their Quirks to sense the location of more Earth Beasts approaching and relay the location of their enemies to their classmates.

Hanta uses his Tape to bind the wings of a flying Earth Beast and brings it to the ground where Rikido and Eijiro are waiting to pummel it into dirt.

Fumikage and Mashirao use their Quirks to knock an enormous Earth Beast off-balance so that Yuga would have clean shot at landing the finishing blow with his Navel Laser.

Minoru immobilizes another Earth Beast with his sticky balls, trapping it for Denki to leap onto its back and melt it with a 1.3 Million Volts blast.

Toru and Koji act as bait for a pair of Earth Beasts so that Mina can disable them with sprays of acid over their legs; giving time for Momo to set up a cannon that can blast the Earth Beasts apart.

Aftermath
As a result of Pixie-Bob's countless waves of Earth Beasts, Class 1-A was heavily delayed in reaching the Forest Lodge.

Trivia

 * The battle was greatly expanded in the anime, as only Izuku, Katsuki, Shoto and Tenya recieved focus in the manga before the rest of the battle occurred off-screen.