Goldeneye X - Silo (Agent) 

Goldeneye X is a Perfect Dark N64 mod by ‪@WreckSeven‬ that basically turns the game into Goldeneye.
Silo is one of the only fully functioning levels made so far.
The level is played on agent difficulty in this video.
If you would like to download Goldeneye X, here is the link: n64vault.com/pd...