According to the movie "Nunc protestas, satane vivet." means: "Now the satan shall walk." My knowledge of Latin language is not so great, but I think "nunc" means now, I'm not sure about "protestas", but it should be close to the current definition of the word and then we have, "satane" which is obviously satan and then "vivet" which would be "will live, so in the end, it goes something like this:"Now ?, satan will live."
Same explosion is used twice in the movie, probably due to budget constraints.
When the party goes into the house, the picture representing the scenery, but also serving as a wall is obvious.
Fake head of Willy is obvious when his decapitated head is seen.
When the doll 'speaks,' you can see his hand moving the doll's head.