Level skip:
Perform the following actions: Press 1 to draw Lara's pistols. Hold [Shift]
and move to walk one step back. Hold [Shift] and move to walk one step
forward. Duck until Lara is fully down, then stand. Spin in a full circle in
any direction three times, then jump forward.

All weapons:
Perform the following actions: Press 1 to draw Lara's pistols. Hold [Shift]
and move to walk one step back. Hold [Shift] and move to walk one step
forward. Duck until Lara is fully down, then stand. Spin in a full circle in
any direction three times, then jump backwards.

Finding Lara's basement and race course key:
Go to the Library. When Lara walks in the doorway, there are two bookcases
to the right. Approach the one on the left and press Action. Lara will pull
a book and the fire will extinguish, allowing her to climb up the side wall
inside the fireplace. After reaching the top, follow the passageways until
reaching a room with two levels, with a lever on the top level. Pull the
block that is on the floor towards the lever. When Lara pulls the switch,
the basement door will temporarily open. Quickly run through the attic, and
down to the main hall to reach the basement. Once in the basement, walk
through to the second room and look in the tank on the right side. Inside
are keys to the race course. To collect it, pull the block in the other
room to the center. Climbing up to that hall leads to the tank. Then,
proceed out of the attic. Do not go back down the fireplace, as it has been
re-lit.

Lara's museum:
Activate the switch on the back of the diving board in Laura's pool room.
Go to the door it opens in her lobby. Pull the lever, and quickly roll.
Sprint straight across her lobby and roll into her museum, barely making it
in time. The Dagger of Xian among other artifacts are in her museum.

All Hallowed bonus level:
Complete the normal levels and unlock all the secrets. The "All secrets"
code may be used to do this instantly. The "All Hallows" level will appear
at the "Load Game" screen. It is an extra London level.

View all FMV sequences:
Successfully complete the game. Go to the load game screen to find a "Look
in the story so far…" selection at the bottom. Load that game and do not
press any keys or buttons to watch the FMV sequences