Like Ned Reid said, this is a realy impressive scrach game. The only huge issues I've found are mostly with the music not being balanced, not being told anything at all, and those collisions being a bit wonky. Other than that, it gives good vibes, especially for being made from scratch. As someone who used to code in Stencyl in my HS, rather then scratch, this game would have deffinitly gotten like an A in the CS game class.
Looking at it from a game perspective, it is definitely very basic, but at the same time, it was fun to shoot and move around. And the art assets were bad in a good way. Was a cozy game to play for a few minutes and shoot the mech thingies.
There's not much substance in the game, especially since I have zero idea what the packs are for. I'm assuming're just not implemented currently. But again, the game has the main core loop mostly built.
Good job making this game!