I got 1 ingot (picked only 1 in the beginning) and gained the title of Blobfish slayer. I tried a bit with 10 then to see the difference and yes it's both an hilarious and fun use of the theme especially as you can drop some to lower your height.
You've got quite some cool looking bosses here, and I like the in-water bullet sound effects. The music is good, the game controls pretty well and they're plenty of cool sequences with many different enemies to deal with all with cool patterns and behaviour including excellent boss fights. The difficulty with 1 Ingot was perfect for me, I greatly enjoyed the game.
That's a super cool entry, thanks for sharing.