Makes most enemies in the game more difficult based on the current selected difficulty.
As of now you can pick between Normal and Hard.
Summary of changes:
More health & defense based on the enemy
Tweaked the behavior of enemies & bosses
Additional enemy spawns (limited)
And various other small tweaks/fixes to enemies.
This is NOT just a "hyper enemies" mod, as it makes more substantial changes.
This modifies most of the enemies' actual behavior in the game to be more difficult instead of applying a flat 2x speed increase. (not that there's anything wrong with doing that)