Goldeneye 007 Tutorial: Jungle LTK
Jungle sure belongs to the hardest of LTK levels. Doing 95% of the level safe shouldn't be difficult at all. However, the ending with its spawned guards is quite hard to make it through surviving (especially if you are going for a fast time), even for top players.
Jungle might also be the LTK level that has been speedrun the least. It is therefore hard to tell exactly how strong the WR of 1:49 is, but it should be quite solid.