Board Thread:Sly Cooper: Thieves in Time discussion/@comment-1823637-20121212200602/@comment-108.12.209.85-20130210005839

For the first door, you need the archer costume (acquired during episode 4) to get there and to open the door you need the theif costume( acquired during episode 5) because it allows you to slow down time allowing you to slip inside before the door shuts.

For the second door you need the jailbird costume (acquired during episode 2) to open it.