Medieval VS Aliens

Do you think sci-fi and history can not exist together? That it would be a total nonsense? Exactly opposite is the truth! In fact, it's funny. Take on the role of a medieval soldier who has the task of defending the fortress. It is just during his patrol that intruders appear. They are not familiar to him and look strange. However, this does not have time to solve, because the enemy is the enemy. Shoot all aliens who come from the mother ship. You have your 999 arrows and there are about 1000 of aliens. Maybe you should hit two at once. Have fun.