Really fun! This is my favorite so far. The survivors gameplay is excellent, the art is perfect, and the music is great. Loved the variety of enemies and polish (e.g level up screen). Upgrades felt compelling, good escalation, good story and thematic match.
The game pacing was generally too slow, maybe because I wasn't able to figure out how "flow" worked. I would have loved a bit more pop on enemy bullets and telegraphs (e.g using red). The levels are also quite long, by the boss I was usually more than ready to move on.
Quoting my son: "You could probably make some bugfixes and balancing and then sell it well on steam for real money!"