Pitfall: The Mayan Adventure game cheats for Game Boy

Game shark codes:

Master code
455926F27B64A7B1
AA79B66C04BA86E6   

Unlimited sling bullets
3F6D1103586AC2D4

Unlimited health
D24F9602FFAB2DCB

Show All The Levels:

At the Title screen, press L, Select, A, 
Select, R, A, L, Select. Press Select and
R or L to scroll through the levels. Press
Left to make the boomerang appear around 
the word Start.

9 continues: 

Quickly and repeatedly press Start at the
continue screen until the remaining number
of continues increases to nine.