Follow our crystal clear walkthrough and helpful tricks to get you through the rough spots!

- Take the CROWBAR (I).

- Open the drawer; take the RECORD (J).

- Put down the RECORD (K); take PORTAL COMBINATION 2/3 (L).

- Walk down.

- Remove the grating with the CROWBAR (M); take the CRANK (N).

- Move forward.

- Insert the CRANK into the slot (O), him the CRANK and move the needle (P); take PUZZLE PIECE 2/2 (Q).

- Tap the artifact (R).

- Open the box; put down the 2 PUZZLE PIECES (S).

- Play the mini-game.

- Solution: (T).

- Take PORTAL COMBINATION 3/3 (U).