Chicken Run - Platform: Gameboy Color

Medal system
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The game's passwords work by entering various medals. To change the 
default medal (Bronze) to one of the others, press Down the following 
number of times: 

Cross: Press Down.
Valor: Press Down(2).
Silver: Press Down(3).
Honor: Press Down(4).
Bravery: Press Down(5).
Crown: Press Down(6).
Diamond: Press Down(7). 

Invisibility
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Enter Crown, Bronze, Honor, Valor as a password. 

Level skip
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Enter Honor, Valor, Bronze, Silver as a password. Pause game play and 
press Select to advance to the next level. 

Unlimited time
---------------
Enter Diamond, Honor, Cross, Crown as a password. 

Level Password
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2 Bronze, Cross, Crown, Bravery  
3 Diamond, Bravery, Honor, Bronze  
4 Cross, Bravery, Bronze, Bronze  
5 Honor, Crown, Diamond, Crown  
6 Valor, Diamond, Cross, Silver  
7 Honor, Valor, Cross, Bronze  
8 Diamond, Silver, Cross, Crown  
9 Honor, Valor, Bravery, Diamond  
10 Bronze, Bravery, Cross, Bravery  
11 Silver, Cross, Silver, Diamond  
12 Bravery, Diamond, Cross, Valor  
13 Silver, Cross, Bravery, Bravery  
14 Valor, Crown, Valor, Valor  
15 Bronze, Crown, Cross, Honor  
16 Valor, Silver, Bravery, Bravery  
17 Bronze, Silver, Valor, Diamond  
18 Crown, Valor, Diamond, Silver  
19 Cross, Silver, Silver, Crown  
20 Silver, Diamond, Valor, Bravery  
21 Crown, Valor, Cross, Silver  
22 Honor, Cross, Crown, Cross  
23 Crown, Silver, Cross, Honor  
24 Honor, Diamond, Valor, Diamond