Press [Ctrl][Shift][Z] and type in:

 gotta have magic          Aren has all spells
 why am i so dull          Max out player stats
 man does my leg hurt      Health full
 supermarket for the rich  Items
 some call me tim          Current enemy dies

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 To open the secret chest hold down [Alt][RightShift][~] during
 the overview map and type in the code:

 1:6479, 2:9216, 3:7702, 4:2132, 5: 5052, 6:0680, 7:0194, 8:4743,
 9:9995