I liked the different ways you had to tackle each level. The level where you had to go up felt too tough because it didn't feel like there was enough time to anticipate the enemies and with the boss level because of the way you had to explode nearby, at times you were flying into the boss itself unintentionally. Also with the level before the boss level you could totally cheese it by flying over the top but kudos for the effort that was put in art-wise and level design-wise.