Very impressive to be made in 7 days! After playing, I looked back at the submission page expecting to see a team of people only to realize it's only one dev. Unbelievable. The game has tons of juice and polish which made it fun shooting the baddies. Very clean pixel art and I love the wobbly backgrounds during the menus. The roulette mechanic for reloading is creative. I was unclear on what the items did at first, but I slowly began to realize what they do, like giving you extra shots or bullets that pierce through enemies.
My game also had a reload mechanic tied to spinning and roulettes, though with wands and spells instead of guns and bullets. It's fun seeing a different take on a similar concept. Mine had different projectiles you could fire while your game seems to be about changing the attributes of your bullets and getting different weapons.
Overall, a really cool roguelite dungeon crawler style game. Probably one of my favorite submissions so far. This concept could easily be expanded on as well. Great job!