While playing a game, press [F2], enter one of the following codes, then press 
[F2] again to activate the corresponding cheat function:

Result - Cheat Code
Animals not afraid of hunter - dh4nofear 
Bullet view - dh4leadeye 
Clear all weather - dh4dry 
Display debug information - dh4breakdown 
Enable all codes - dh4super 
Flight mode - dh4skyhook 
Gun sighted in - dh4sightin 
Hunter never tires - dh4homegym 
Irresistible to animals - dh4beacon 
Large deer - dh4monster 
Lightning - dh4zeus 
More gore - dh4f13 
No animals - dh4plague 
No clipping mode - dh4truck 
No noise - dh4damper 
Rainy weather - dh4water 
Set time to noon - dh4noon 
Snowy weather - dh4ice 
Stop slope effect - dh4climber 
Thunder - dh4thor 
Travel to nearest animal - dh4find 
View bullet paths - dh4tracers 
View deer on map - dh4showme 
View info on active view models - dh4vmwatch 
View info on nearest deer - dh4deerwatch 
Walk on target range - dh4caddyshack