We need do develop an Assault minigame. That is a 2D action game, where a hero is controlled by the player in a Zelda fashion.
The hero will walk by a mini dungeon, to find monsters with some sort of skills. If it choose to fight, it have to kill the monsters, otherwise the player will be shoot out of the dungeon.
If the player choose to run, the monsters will chase him.
There will be also chests and traps. The player will be able inspect the chests in order to disable its traps.