To get this achievement, you need to let time expire in a Hidden Object search 25 times.
Some suggestions if you're trying to farm this:
* Deliberately pick a cheap energy map without any keys to fail, e.g., Forest Cabin or Fisherman's Hut. It's a waste of resources to deliberately fail on the Mage Tower or a similar high level.
* When the failure occurs, make sure you choose Close and not Replay. If you want to repeat, rechoose the map afterwards. Otherwise, it only appears to count failures a single time, no matter how often you replay, thus wasting your time and resources.
* Do not deliberately choose to fail on a map in silhouette or night mode. You need to do a lot of these successfully in order to get some other achievements, and you cannot control when they will appear, so no point in wasting them on deliberate fails.