A small hotfix, live now:

- The achievement for unlocking all 15 hammers could never be earned due to a bug. It's fixed — and it's retroactive: if you've already collected all 15 hammers, the achievement will unlock shortly after you load your save.
- The merchant could sometimes sell hammer upgrades that did nothing (leveling up the special hammers, or re-buying a hammer you already owned). Those options now correctly show as maxed out.
- Install size reduced by about 143 MB — an internal test build had accidentally shipped inside the game's files.

Sorry for the trouble, and thanks for your patience!