Really cool concept! A bit hard, but after several tries I've been able to reach the "end" of the game (I wish I could have put that score on the leaderboard! :p). What caused me the most troubles were the swarm of ennemis and projectiles in the second half, the short range of the bullets and impossibility to aim (except for one ship), and the lack of time to discover and learn the last two ships (too many ennemies on screen)
However, despite this difficulty, I really enjoyed the game and its concept! Holding the controller in different positions is fun (wow, it reminds me of the Wii era), and it's cool to discover several way of playing. The count-down before dying is also an excellent idea, making the game a bit forgiving while still creating tension! As for the art, it's simple, but it does the job! Especially with the different ships design, really well thought.
Globally it's a fantastic idea, with great execution. Well done!