v5 and Achievements Fix Update

[Kyuppin]

Hello! With the release of v5 and today's patch, all achievements should now trigger correctly. On startup, the game should trigger any already seen ending achievements if steam didn't unlock them for you previously.

I also added some new variables to track the other 3 achievements for playing dress-up, viewing the credits, and finding the secret menu so you may need to visit those screens again to get them to trigger.

Thanks for playing!