I thought I might put this here for those of you who are stuck on the first two levels. Because I didn't put a tutorial in there because I am smart.
NOTE:
This is a step by step guide telling you how to beat it. If you want to find out yourself. Good luck.
Tip: check your surroundings first.
Level 1
- Shake the shelf and run and hide behind the painting.
- Wait for him to walk in and sneak on through.
Level 2
1. Shake and hide behind the shelf
2. Sneak behind him. NOTE. he doesn't get locked in the other room so you need to get the key and quickly hide behind the painting. Go back to the room you came.
Those are the first 2 levels. Hope this helped!
That's all!