Thanks so much for playing. You are right about the upgrades, I didn’t playtest enough so my level scaling was horrendous and the game became impossible past level 5, otherwise the upgrades would’ve scaled and maxed out at 15%. I should’ve raised the floor for upgrade percentage too, idk why I didn’t think of that. About the damage, I did have actual values for zombie health outside of just a flat 1, I just think I didn’t make the numbers right because some zombies should take two hits to kill. Anyways, thanks for leaving a comment.