Brooo this looked like a legit entry from the very first screenshot, and delivered outstandingly! This is a superb application of the 'loop' concept. Not only that but it's also very fun to play. I'd love to see it make it to the top entries! My personal best was cycle 12.
As some sort of feedback for a final polished product:
What about making the neutralizer packs be automatically picked up when stepping on them? Also the shooting mechanic could be polished for better precision, or make the explosions have a greater radius. I also thought of a blocking mechanic as to make the projectiles bounce back to the enemies, so you can have a bit of a more aggressive playstyle without giving you more ammo. Just some random thoughts though.
Keep it up bro, you have great talent!