Bossing team (Piercing/Explosive) on top, Clearing team (Piercing) on the right.
Turn 1: Move Bossing Team down, and move Clearing team left. (Bossing team will be attacked by enemy above.)
Turn 2: Move Clearing team left, then swap positions with Bossing Team. Attack enemy to the left with Bossing team. (Bossing team will be attacked by enemy below, and Clearing team will be teleported to Start above.)
Turn 3: Attack enemy to the right with Clearing team, and move Bossing team up to get gift box. (Alternatively, kill boss for a 3-turn clear.)
Turn 4: Kill the boss with Bossing team for a 4-turn clear.