The theme of the jam was Sensor Adaptation. And in the beginning I had it that cannon improvements give much more than light improvements. So I added enemies damage from light, if he is on the light and damage under the cursor. The fourth kind of enemies, which rotates around the centre and improvement on the regen XP I added already 2 hours before the end of the jam. I didn't have time to make the balance properly) Thanks for the detailed feedback!