WAIFU IMPACT

All of the girls gallery pictures are unlocked via collective kill count. 25 kills for the 1st picture and 50 kills total for the 2nd picture. While you can randomly run around the island looking for enemy girls, there is a faster way. You unlock the individual characters by collecting stars, once you have clicked on and unlocked them all the Arena becomes available. In the Arena you face 20 waves of increasing numbers of enemies in a small area. It is a much faster way to get kills and if you die just restart the arena.