We have them for the XBLA version here if you cant wait https://www.speedrun.com/goldeneye_007xbla_ltk_dltk
would be cool if it was added here though
"LTK means playing in 007 Mode with all settings maxed except for Enemy Health, which must be set to the minimum. LTK stands for License to Kill, which is GoldenEye's name for the one hit kill scenario in multiplayer.
Dark LTK means playing in 007 Mode with all settings maxed: Enemy Health, Enemy Damage, Enemy Accuracy and Enemy Reaction Speed."
Speedrunning communities often have specific rules and categories for different types of speedruns, and whether DLTK or LTK is allowed in individual-level speedruns would depend on the rules and guidelines established by the community for that particular game.