Fun little space shooter! I like the enemy designs and their progression over the course of the game. The music is really catchy but its too complex. One sound should be played at a time. Currently, you have sfx playing at the same time as the music. Also wanted to mention that I encountered a few bugs. On restart I can't move the ship horizontally and sometimes I get auto killed by an enemy over where I spawn once I restart. Good job completing a game and utilizing the upgrade theme. Thanks for participating!