Knights of Pen & Paper 2 Deluxiest Edition

For this achievement you need to fully investigate 5 areas. You unlock the ability to investigate an area after the quest "That E of D.E.R.P" very early on in the game. When you look at the overview of an area on the map, the number by the magnifying glass tells you how many items you can get from investigating. The actual act of investigating costs 5 gold, and every member of your party rolls a die. If they get a number in the number range, you get one point. The investigations screen shows how many points you need for the items in that area. To get this achievement you need to get every prize in 5 separate areas.

Two things to note : Since every member rolls a die, doing this before you have 5 party members is a waste of money. The other is that the roll range is based on your senses roll, so using items that increase your senses stat will make it easier to get points. However this game basically throws gold at you, so I never bothered min-maxing senses for investigate rolls. I had over 10k gold by the time I finished the game.