Check the stats window for descriptions, or Lancet's
DKS FAQ/Guide:
Three stats remain, and these three are directly affected by Strength,
Dexterity, and Intelligence. All three serve a specific purpose, and cap at
75%.
CONDITIONED BODY
Icon: Red shield with a fist.
This stat is governed by Strength, with each point increasing it by 1%. The
Conditioned Body stat reduces the duration of time various statuses affect
you, such as Bleed, Burn, Poison, and Polymorph. The damage done per second
and chance of being afflicted are not affected.
HEIGHTENED REFLEXES
Icon: Green shield with a lightning bolt.
This stat is governed by Dexterity, with each point increasing it by 1%.
Heightened Reflexes is additional damage dealt when you score a critical hit.
A critical will deal 150% normal damage by default, and your Reflex increases
it further according to this formula: (150 * HR%)%.
A HR of 10% will therefore have criticals deal 165% normal damage. A maximum
HR (75%) will cause criticals to deal 263% of normal damage.
INDOMITABLE WILL
Icon: Blue shield with an incandescent lightbulb.
This stat is governed by Intelligence, with each point increasing it by 1%.
Indomitable Will determines your resistance to Curse, Fear, Polymorph, Ranger
Surprise, and Stun statuses. It only affects your resistance to being
afflicted initially, though, and will do nothing to shorten the time they
last, or reduce the effect they have if the check fails.