I'm really early in the game, after I got the tip about hotkeys I made my axe and pick my hotkeys and now the only action it says I can do is attack with my axe (I can't talk to the miner again)
Unequip the axe. This will be changed in a future update, but equipment currently means "only attack on z until unequipped," and when nothing is equipped, it will still attack when you hit z next to an enemy.
This is an awesome game, but when I change some of the options in the menu, they seem to re-activate after a while. I'd like to farm for a while on a floor, so I would turn off the auto-buy, but it just turns itself on. Anyway, great idle game!
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Unequip the axe. This will be changed in a future update, but equipment currently means "only attack on z until unequipped," and when nothing is equipped, it will still attack when you hit z next to an enemy.