Spy hunter is a neat game about a spy car (and sometimes boats) that goes real fast and has to destroy other, evil, cars (or boats) on the road for points, all while looking out for the civilian vehicles.
Occasionally a weaponry truck will come around and give you something awesome to enhance your destructive abilities, like this one carrying the Oil Slick attachment.
But, the trucks come pretty infrequently, wouldn't it be awesome if you could just start with all the weapons from the get-go?
Well, hold on to your hats.
At the title screen, hold down A + B + Select and hit start and bam!
Access to all the weapons that the game has for you, even the anti-aircraft missiles!
Just be warned that you lose them all if you crash, so try to not do that.