[spoiler]Look up "Vampire Slayer abilities" from the Buffy the Vampire Slayer universe for more info, but...ex: Ability to see in close to pitch-black and great distances in detail, greatly increased strength(maybe not Primarch level, but a bit below), amazing reflexes and speed, along with increased hearing and amazing recovery skills.
They can also detect evil if great in strength or close proximity(same room, 40-50ft).
That's the usual Slayer package.[/spoiler]
*Buffy instinctively moves to run for the nearest door before the Slayer stops her. Overcome with sudden dread, she looks up, trying to pierce the gloom.*