The games nice and I like the art style as well with the postprocessing effects and animation, the sound effects and music fit the game very well but what's with the three weapons at the main menu cause I can't get any new weapons, for the enemies please at some sort of particle effects before they spawn since I can't tell where they will be spawning and end up dying.
nice job on your first game jam especially a two days one :D(I like your sense of humour)