Well this is clearly only a prototype, so I will evaluate it based on the parts that are already done:
First of all the music and the aesthetics are rad. It feels like SHMUP of old.
The gameplay is mostly fun (well it's a standard SHMUP); it has juice and it is fluid enough... but probably as others have mentioned there is a spawnkill problem that needs to be addressed.
Overall it was not bad. I swear though every time I start MGGJ about half of the submissions are SHMUPs...
Thanks for participating!