Thanks Xzing thats a great idea. If you have any suggestions I am all ears!
Viewing post in Too Many Ghosts jam comments
Increasing speed/damages, having some effect such as a piercing attack, slow, explosion or a double-side attack (this effect could aslo return against you considering the fact that you can kill yourself). Enemies could also be better with time (back shild, more life, spawning other enemies when they die).