It's a competent platformer, but I didn't see a good relation with the theme of the Jam. Good platforming controls, good shooting feeling and I liked the dying sound an animation of the enemies. I did feel that the level design was a bit unfair.
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Thank you for playing our game and your feedback. We tried to fit the theme of the game, "What's behind the door?" in a way that each time you pass through the door, it will progress in a different theme. This is how we thought about the theme in general. Also we wanted to make the levels a bit challenging but it was our first time and we made some mistakes in level design. Thank you for your honest comments and playing our game.