I estimate about 60% of the ROMs data has been identified and labelled in this excel file. ALL of the level data, enemy locations. Most of the graphics. NONE of the music/sound.

It also includes (in a pale red color) anything that I changed in the Jackal 2 ROM hack (original ROM data is still there).

A lot of the logic is labelled as well (e.g. enemy timers, spawns, etc.).

A lot of tables are also labelled. For instance, bullet vectors, enemy point values, enemy health, etc.

Most of the RAM is labelled as well.