Great job on the shop feature! Also noticed that the game actually saves when you come back again. Just need a little more polish on the UI side like others has said, and also maybe the ability to skip intros. Well done!

Best tutorial level! Also music was great I was vibing! I also love the Vampire Survivor like nature to it!!! 

- It would have been helpful for the UI to be a little more readable! 

- I think the shop concept is amazing! I would have liked to see lore justification for it since you spent a lot of time on the intro! 

Honestly? Not a half-bad space invaders-like.

Beyond that, this was extremely fun to break. I was laughing the entire time because of how much I had broken the game. Like Let's Game It Out levels of broken. LMAO

• On level 2 towards the end, I was able to keep shooting at something up there... and netted myself 40,000 sweet buckaroons to spend on a lot of nice upgrades at the shop.
• On level 4 (between Fubuki and Mel boss fights), I did the same thing... but with my enhanced abilities, I managed to break it somehow firing up there... so much so that this loud terrifying buzzing sound emerged. Once I stopped shooting and pressed space again to go back to the main menu, I had enough money to buy myself a couple of Lamborghinis (~690,000). LOL
• With the extraordinary amount of upgrades I could unlock (I'm kinda glad it wasn't capped), and bullets for eons, I could zero-shot Mel by spawning an ungodly tarantula and unshackling the ace up my sleeve: Eternal Demonetization Beam: Final Form. Within the course of microseconds, Mel had -6 health out of her measly mortal 100... and I was straight back to the menu with an extra 8,000 Haachama-approved bucks to my name.
• Level 6? Not a chance. Elder God Haachama could now shoot Unlimited Gift Works Beam: 9th Breathing Technique and emit an otherworldly BRRRRR sound while the poor enemies descending from the heavens disintegrated faster than IRyS's Nephilim Beam could ever dare dream to fall.
• Aki? Gone, reduced to ashes.
• The level after, on the stairway to heaven? A bountiful slaughter for Elder God Haachama, who could now rival Saitama's Serious Sideways Jumps and collect uncountably many hearts to sate the higher beings. I decided to see just how long I could go with the Level 4 Break... so long so, the "You Win!" screen actually quivered in fear, cowering and freezing every so often as it dared try to cover the screen and interrupt Haachama's exceptionally seiso ritual to acquire millions of dollars. I caved in and went back to the tune of 300 million yen.
• Defeating God and completing the game earned me another billion yen, just to support Haachama's transcendence. Amen.

Hachama's text scrolling sound effect caught me completely off gaurd. This game is hilarious!