The Hey, Listen! achievement in The Plan can be achieved after first completing the game, then clicking on the text at the bottom of the screen.
Don’t worry too much about how long it’s going to take to first complete the game, because it’s less than thirty minutes to get to the end. In fact, I’d say that it’s less than ten minutes.
Once you do complete the game and go back to the title screen, there will be text on the bottom that wasn’t there before. Click on it and the fly will turn into Navi from the Legend of Zelda games. It’s not as annoying though, so no worries.
Now, sometimes after finishing the game and getting to the main screen, the game will crash for people, not allowing the achievement.
You can just boot the game back up, click on the text, and then get the achievement.
I get it, I had problems with it as well, but I finally obtained it. Just know that once you complete the game, you won’t need to play through it again, so there’s no need to waste your time as Navi unless you actually want to, but nothing changes other than our appearance.
Then again, it would be nice to incinerate her at least once…