Fantastic game. I got the artifact once, and i think this game has a lot of potential. if you will add some new upgrades, new enemys and maybe even a boss fight (i saw a big shark at the end, but i just skipped it))))
Also soundtraks are makikg so fantastic atmosphere for the game, i really enjoyed it. I hope you will make some updates and keep making this projest better and better, so it might become a great roguelike!
Good luck!!!!