The game looks phenomenal.
This game jam has a few gems that put lighting into good use, this is one of those gems.
I never go to the ending, maybe I was too impatient but I didn't feel like my firepower was increasing.
I did find a pretty funny bug however! You didn't lock the "Ressurrect" Button on a "one-time" use, so if you spam it really fast, it triggers up to 5-10 times, making huuuge explosions possible :D
I love dark games like that, great job!