There are a lot of viable lineups, but the recommended lineup here has to be Empire’s Glory. With some of the best Cavalry units in the game and Bernhardt’s Fusion Power, which strengthens attacks when you’re at a class advantage, the Empire is sure to make short work of Adon.
Other Langrisser Guides:
Send everyone apart from Vargas to this position on the left, then use Bernhardt’s Fusion Power and lure the enemy down.
Leon and Imelda can take out the enemy infantry, while Bernhardt goes to the other side. Let the remaining enemies attack him, while the rest of your party focuses on healing Leon. Make sure that Vargas is more than 2 blocks away from Bernhardt at this time, so that Adon doesn’t wipe him out with his Macho Blast.
After Bernhardt and Leon kill the remaining enemies, Imelda and Anna can heal Vargas back to 100% HP, but you’ll want to save Imelda’s Mass Heal for a little later on.
When the Archers make their way down, Imelda should heal Bernhardt and Leon to make sure they deal maximum damage, while Anna and Vargas stay out of the Archers’ range.
Use Leon’s Smash skill to make short work of the Archers.
Then leave him at this position ▲
After Bernhardt finishes this Archer, Vargas can move up parallel to him. The Archer will advance, aiming for Vargas, but will not be able to reach him.
Firstly, move Bernhardt to this position near the danger zone, then use his Fusion Power. Vargas can then move to a lower position.
At the end of Round 6, Imelda should move up and away from Vargas to the position shown above.
Finally, send your attackers to take out the Archer and get ready to face Adon with your party in peak condition! Good luck!