Metal Gear is a surprisingly large game despite its small data size.
The game is made up of individual screen sectors. When you combine these sectors, you get a view of a vast map of buildings and structures.
In 1987, this map was absolutely impenetrable without a game guide.
luckily, this version is a bit modified and lightened up...

Here are some points and tips to help you navigate the maps for completing the game.

• There are a total of 8 cards in the game. They are scattered throughout the maps and can be used to open locked doors.
  
  
• The individual sections of the map are separated by elevators. The elevators are labeled A-F, and there are 4 of them in the game. Two of the elevators can only move in one direction.
  
  
• In some places on the map, you need to use a transmitter with the correct frequency to spawn an item or open a door.
  
  
• All consumable items respawn, so you don't need to worry about running out.
  
  
• Enemies also respawn so keep that in mind

Building 1 - 1st floor

Here the game begins.

Building 1 - 2nd floor

Building 1 - 3rd floor

Building 1 - 4th floor (Roof)

Building 2 - 2nd floor

Building 2 - 3rd floor (Roof)

Building 2 - 1st floor (south)
Building 3 - 1st floor (northern part)

After a scorpion bite, use an antidote

Building 4 - ground floor

In a room without light, use a flashlight.

From MAP1, use card 4 to get to the south side of this map.
Then north to MAP7.

Turn on here mine detector and keep going up.

Basement - Underground

All Metal Gear 2: Solid Snake Maps can be found here - https://cs2bus.com/sharedfiles/filedetails/?id=3072912800

Metal Gear is quite a challenging game, even though this version is modified and simplified.
I believe the maps can help someone.

Thanks and "Good luck!"