Metal Slug X
Unlock Arcade & Another Mission Levels:
Beat the game in arcade mission mode to unlock all the levels in the “Arcade Mission”
and “Another Mission” options.
Select Combat School and while it is loading, rapidly press Square until the menu
appears. The instructor will ask if you want to chat with her.
Combat School Rankings:
Rank Points Super Devil 1000 General of army 990+ Lieutenant General 890+ Major General 780+ Brigadier General 700 Colonel 650+ Lieutenant Colonel 600+ Major 575 Captain 560+ 1st Lieutenant 550+ 2nd Lieutenant 500+ Chief Warrant Officer 475+ Warrant Officer 450+ Sergeant Major 425+ Master Sergeant 400+ Sergeant 1st class 350+ Staff Sergeant 300+ Sergeant 250+ Corporal 200+ Private 1st class 150+ Private 100+
Thanks to Revolution readers Camel!