The "Memory" menu loads and saves from memory cards. The PSP obviously doesn't take PS1 memory cards, instead it simulates them automatically on the Memory Stick. Ghost in the Shell doesn't load saves automatically, you have to load them manually in this menu.
Let's start mission 1! Here's a shot from the mission's intro cutscene:
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Look at those user interfaces, just like the 1995 film! Why can't modern tech look like this?
We're in the mission:
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What am I doing? Photographing the mission area! As you can see, the game will react to you being idle which is a nice detail for a game this old.
The gameplay of this game involves operating a Fuchikoma, a robot tank used by Section 9 which can walk on walls and ceilings. Fuchikomas were a big part of the manga, but they were absent in the 1995 film and replaced by the blue Tachikomas in Stand Alone Complex. If you don't know what Section 9 is and haven't watched any GitS anime or read the manga, what are you waiting for? I suggest starting with season 1 of SAC, I heard the 2nd season is good too but haven't watched it yet.
In the default control scheme, which is the scheme I like the most, the D-pad is used to move forward/backward and turn left/right, the bumpers slide left/right and circle jumps. Quickly pressing the square button shoots your gun, holding the square button charges homing missiles. Triangle shoots a "grenade", which is more like a short-ranged energy bomb that deals a lot of damage to everyone near you. All ammo except grenades is unlimited! No rope-throwing unfortunately, but the movement part of gameplay still feels very original.