Good Reflexes Achievement in Queen's Quest 3: The End of Dawn

There are two types of HOPs in the game: the ones where the item names are listed on the bottom, and the ones where the item silhouettes are displayed on the bottom. The former type of HOPs are randomized to an extent, whereas the latter type are not randomized and are therefore the same every time.

With that in mind, there are two methods to obtain this achievement. The first is, since you're likely playing on Casual and therefore there is no penalty for mistakes during an HOP, to just go around the HOP mashing on various items as fast as possible, getting lucky and finding the majority of them, then mop up the remaining ones quickly. This is definitely viable in many of the HOPs, but a guaranteed way to get this achievement is to first go though an HOP (preferably a nonrandom one) and find all but one object, taking as long as you need. Find the last object but don't click on it. Instead, force close the game app. Do NOT quit to the main menu; doing so saves your game. Relaunch the game app and resume your game. You'll be just before the same HOP. You should now know where most, if not all, of the objects are from memory, allowing you to very quickly go around and click on them all in under a minute.

Using this latter matter is also a surefire way to unlock "Three in Three" as well.