How to get Era Walk achievement?

[Kung Fu Kenny]

Hi, the achievement says "Have both the Broken Watch and the Stop Watch in your collection".
What does it mean? I´ve picked both of the items in the same run and I didn´t get the achievement so, what do I have to do? Thank you :D

[Desticler]

I assume they have to be picked up, and appear in that page in Stats which shows all items you ever picked up. I don't know, I got Era Walk when I booted up the game after Booster 5 came out.

[Lucathegreat]

I wasted my time getting both of them in the same run as well, only to find out the achievement already popped out automatically while starting booster 5.

[Basileus Juul]

It means you need to pick both up at least once, and not necessarily on the same run