Open up the folder that you want and extract the Mods folder into your EDF5 folder.
Enemies with a 0 in droprate have not been changed.

25    All drops set to 25
50    All drops set to 50
100   All drops set to 100

x2    All drops multiplied by 2
x5    All drops multiplied by 5
x10   All drops multiplied by 10

May cause lag and might crash the game, recommended to lower graphics settings and/or not kill too many enemies at a time.