Chapter 4: Unlikely AllegiancesMinor spoilers
Let guests take kills and have Cai handle targets behind fences. Zarcone has two lives; check level 10 class changes after the battle.
In the Battalion tutorial, hit a group of enemies with a Gambit first, then have each unit finish one enemy. In the main battle, let Cai and the other guests take kills. Their experience is shared with your army afterward. If a fence blocks the way, it also blocks Theodora’s Earthen Throw. Use Cai’s skill that passes through obstacles instead. Zarcone has two HP bars, so keep attacking after depleting the first. If normal attacks can finish the fight, save the durability and expense of Combat Arts.
Weaken the group with a Gambit, then split the kills
In the Battalion tutorial, use a Gambit to hit several enemies without taking a counterattack, then let each unit finish one. The tutorial Gambit also limits enemy actions. Check whether other Gambits have that effect before switching.

If you plan to keep using Battalions, consider staying on an infantry class path. Cavalry cannot equip Battalions, so mounting up gives up those options.
EXP from guest kills is shared with your team after battle

Let Cai and the other guests take kills freely. Their experience is shared with your army after battle and helps your regular units level up, so there is no need to reserve finishing blows.
Let Cai handle enemies behind fences
If the enemies in the center do not advance, check for a fence between Theodora and her target. Fences block Earthen Throw, so use Cai’s obstacle-piercing skill against enemies behind them.
Empty both of Zarcone’s HP bars
Zarcone has two HP bars. Keep attacking the second after emptying the first. If you still have Gambits left late in the battle, you can use them for damage too.
If money is tight and you want to save durability, prioritize normal attacks such as shots and punches for the finish. Let units who still need experience each land a hit before ending the battle.
Check class changes at level 10 after battle
After experience is awarded, check who reached level 10 and check their class-change options. Guest experience is shared at this point, so do not judge eligibility only by your units’ levels during combat.
Recruit Sofia as your sixth unit next chapter
In Chapter 5, aim to recruit Sofia for extra healing. The next battle allows 6 units, so a team of only 5 leaves an empty slot. You cannot recruit her below Renown level 2. Complete side quests and return to the city to turn them in first. Reach Renown level 2 within the coming 52 turns so you still have time to recruit her.
Zarcone
Lilian
Lysander
Cai
Tialla
Orchel
Diego