Thanks! Checkpoints were something I thought about adding in but didn't due to it originally being a rogue-like; but that didn't get all the way implemented. I have plans to add a checkpoint system though!
Hey! I wanted to let you know that there's an update for the game that adds a proper health system. Which should make the game less punishing. There's also plans to add run modifiers in the game which will include a checkpoint modifier in the next update later on next week.