Very nice graphics and sound. Fits the theme quite well. The tutorial was good.
Some points of improvement:
- at the beginning it was not clear that i needed to go to the beacon, maybe the should flash their light beam or so
- the player feels underpowered and it takes way to long to kill enemies
- when the big group spawns at the first beacon it feels like a waiting game because it takes too long to kill the whole group
- the weapons cooldown just takes out the fun an makes the game even slower
With the improvements and some balancing the fun factor can be drastically increased, because there is a solid and polish base here.