Rayman 2 - The Great Escape - Platform: Nintendo64

Get 100%
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In order to get 100% at the game select menu you have to 
find a secret lums in the Tomb of the Ancients level. In 
the first part of the level, after having activated the 3 
switches that raise the platforms in the poisonous pond, 
jump on these floating platforms and climb the web on the 
other side. Once at the top, instead of just falling down 
the pit, place yourself at the edge of the wall, to the left 
(when facing the poisonous pond), Then, fly over the pond, 
go as far to the left as possible to find a narrow hall in 
the wall, and land on the platform. Follow this path and kill 
some pirates to get the 1000th lums in the skull's eye. 

75% code
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Go near the first frog in the Aztec level to get the code to 
get 75% from the fairy.