Secrets

In the Tomb Raider's 1-5 there were always secrets you could look out for. Alas this was not the case in Angel of Darkness. They were dearly missed by most players.

Tomb Raider 1

In Tomb Raider 1 there were 46 secrets, all of them pickups like medipacks, ammo and weapons.

Caves (3)
City of Vilcabamba (3)
The Lost Valley (5)
Tomb of Qualopec (3)
St. Francis Folly (4)
Colosseum (3)
Palace Midas (3)
Cistern (3)
The Tomb of Tihocan (2)
City of Khamoon (3)
The Obelisk of Khamoon (3)
Sanctuary of the Scion (1)
Natla's Mines (3)
Atlantis (3)
The Great Pyramid (3)

Reward: /

Tomb Raider 2

In Tomb Raider 2 you could find dragons, 3 in each level (except Home Sweet Home). There was one of each kind, gold, silver and jade. As a reward for collecting them you got extra ammo/weapons for the third dragon in each level.

Reward: Goodies with each third dragon you collect in a level.

Tomb Raider 3

In Tomb Raider 3 there were 61 secrets (60 plus one bonus). These were normal pickups again, like in Tomb Raider 1.

Jungle (6)
Templeruins (4)
Ganges (5)
Caves of Kaliya (0)

Nevada Desert (3)
High Security Compound (3)
Area 51 (3)

Coastal Village (4); you only have to find 3
Crash Site (3)
Madubu Gorge (3)
Temple of Puna (1)

Thames Wharf (5)
Aldwych (5)
Lud's Gate (6)
City (1)

Antarctica (3)
RX-Techs Mines (3)
Lost City of Tinnos (3)
Meteorite Cavern (0)

Reward: If you collected 60 secrets you can enter the Bonus Level All Hallows

Tomb Raider 4 - The Last Revelation

In Tomb Raider 4 one could find 70 secrets. These consisted of regular pickups, except for the first eight, which were golden Skulls.