To unlock the individual cheats, complete a 
level and recover the quest object in that 
level. Quest objects are some, not all, of 
the levels. For example, if you complete 
level 4 (Caution: Curves Ahead - Sydney's oil
rig level) and collect the quest item (look 
for it near the second hostage situation) you
will find that the invincibility cheat has 
been activated in the cheat menu.


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