I just started a new game, and made it up to Decoy Drill. I’ve done this level before, and prior to this time through, it’s needed the “Wooden Builder’s Hammer” as a requirement for the level, and has forcefully suggested when previously attempting the mission. On this time, however, “Wooden Builder’s Hammer” wasn’t suggested. It didn’t even show up in possible purchases, in the level select screen.
That said, I went to the “Items” icon in the “Level Select” area, found the “Wooden Builder’s Hammer”, and purchased it.
Just letting you know that it’s not hinting at “Wooden Builder’s Hammer” in that level’s prep screen.