GS writes: As if the game wasn’t huge enough with all the Island exploration, secret items and relics to collect and locations to find, Tomb Raider also has 7 optional Tombs scattered all around the island in addition to the one present in the main story. Since these tombs are completely optional, there’s no reason to search for them and complete the puzzles withing if you’re just going to complete the story of the game. There are, however, a few advantages in completing these optional tombs: completing them will give you some extra XP which is pretty good, considering how many skills are in the game and how much EXP points are needed to master all of them. At the same time you’ll be able to find some extra items and relics, as well as simply enjoying more of the excellent Tomb Raider gameplay. If you’re looking to 100% the game and obtain all trophies and achievements you will have to complete all seven extra tombs, since the Intellectually Superior trophy / achievement is unlocked only after completing the extra seven tombs. Another tomb is available as DLC, the Tomb Of The Lost Adventurer, but it’s not required to obtain the trophy/ achievement. In this guide we will cover all the extra tombs with tips to find and complete them.