Hey, thanks for playing and your feedback, we are glad that you liked the concept and our intention behind it!
You are fully right, those are fair points. We are working during the 24h-extension to implement some assets and parts of the game that we didn't manage to get yet, and we will definitely take your review in mind :)
The theme Rebirth was not about the respawn of the player or how many hits they can hold, but rather the game story and the reason behind the upgrades. In order to progress through the game and be a hero, the player willingly let the infection progress through to grant them new abilities, so it becomes something else, and therefore the rebirth theme. We clearly didn't deliver it correctly so thanks for pointing it out! The version 1.1 should get the idea a bit more clear, as we added a short end for the story.
Maybe after the final deadline, if you wanna see the improvements, we would love to hear again your feedback!