Didn't know that this was released a while ago but I'll make a video on it either way.
TIME SAVER: IF YOU REMEMBER HOW TO UNLOCK SANDBOX IT'S THE SAME THING FOR BLANK BOX!
Timestamps -
00:11 - Start by throwing everything into archive (Breakroom Level)
00:33 - Now in museum go into secret door (Museum red button area)
00:56 - Blank Box module (Same room you unlock sandbox)
01:02 - Little skip
01:14 - Claim item and FINISH LEVEL!
01:26 - Quick view of blank box
Hope this helped and you enjoyed it!
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