Begging from now you are the only thing that stands in the way of total subserviences to alien masters.
Of course there is no need to worry yet. The first invasion is three years from today.
Pick your martial arts. Begin your training.
If you manage to clear the first invasion attempt, each new one will come every six months. Each time it will be a different more powerful alien race. They can appear on the ground to.
To be fair, you are given a self-teleporter that lets you go to each location the aliens occupy. Each time you teleport thoug, you need a full 24 hours before you can do so again.
What MA do you choose?
What can you potentially stop?
What if after you've fended off 5 invasions you had to compete in a MA tournament with other from alternate universe who picked different MA?