After the title screen and the language select screen select password and enter the following chain.

Effect	Password
Area 01, Way Out of the Village, clear.	-N6+37M
Area 02 through 06 clear.	-CQ5N5H
Area 02, Forest & Pocket of Water, past.	MN6-37R
Area 03, Savanna, past. High jump gained.	-N6-M3H
Area 04, River, clear.	WDQ033H
Area 05, Thick Forest, past.	RDQXM3H
Area 06, Rocky Plains & Warthog, past. Digging ability gained.	CDQ5M5H
Area 07, Termites' Nest, clear.	W7QN45H
Area 08, Mountains, clear.	T7QNNZ-