Tales of the Red Canyon

For this battle, you’ll be fighting several giant wolves, birds, and a Demonic Beast. To secure victory, you have to take down the demonic Beast to the south. Byleth is also a critical unit so you have to keep him alive; however, he’s isolated in the stronghold to the northwest. If you’re confident about Byleth’s survivability, you can have him/her move eastward then south towards the bridge to regroup with your students. Otherwise, stay put in the stronghold for some defensive boosts and HP regen.

Next, move towards the bridge to the north to engage the giant wolf there. Its shields will only require one attack to break. Use AoE (area-of-effect) Gambits to destroy these with ease. Once done continue north to defeat the other giant wolf there.

Once cleared, you can fall back and regroup to the middle of the Map. Send someone with Locktouch or Chest Key to open the lone chest the left of the middle area to get a Knowledge Gem. After a few turns, the wild Demonic Beast and its giant bird minions will move towards your army. Another giant bird will appear to the north as well.

Don’t hesitate to pull back your units if they’re scattered. It will be hard to fight the giant monsters if your units are scattered so if you can afford to send someone as a bait to distract the Demonic Beast, that will help your allies to finish off the minions. Make sure to save your Gambit charges against the wild demonic Beast since it has thicker shields that will require at least two hits to destroy. Once the demonic beast has engaged your army, unleash the Gambits to destroy its shields and finish it off.