i don't understand how extra strikes work, don't you always get game over after doing 3 mistakes? Each mistake means "x" above head of Hannah, then why did i get permanent X after buying upgrade allowing me to commit more mistakes?
I looked in the script and saw the issue - the strikes upgrade is adding to how many strikes she starts with. So if you purchase the upgrade twice, she starts with 2 strikes and needs 2 +3 strikes to game over, making the upgrade pointless.