No, when he takes that archetype, he gains Crypt Lord (at level 15), but loses any and ALL his cruelties as per the text "This ability replaces cruelty."
Go to the d20pfrd site and scroll down to the bottom where it says Archetypes and then look at the abilities replaced as signified by an "X" or changed as signified by a "C".
Typically when it only replaces one level of a scaling ability, the archetype ability will say "Replaces ability X at level Y". I think losing all cruelties for a single ability at level 15 is a bit harsh, but that ability is pretty good, so it might be a worthwhile tradeoff. Especially if you are already starting at high levels (or are allowed to take an archetyped version of anti-paladin when your paladin falls).
Compare
This ability replaces the smite good use gained at 10th level.
With
This ability replaces cruelty.
Still, i think is a missprint. After all, is ultimate combat. They have hired frankensteine stupid twin to write it.
Compare the abilities. One gives an additional 25% immunity to rogues and crit builds; immunity to death effects, paralysis, sleep effects, and stunning; no need for sleep; immunity to effects that cause fatigue, and effects that would cause him to become exhausted instead cause him to become fatigued. The other allows you to impose a single condition on an opponent, who gets a save against the effect. When you already have four of them, losing just one for the boon of all the above is pretty awesome.
However, it's bad design. You shouldn't lose a scaling ability for a static ability, especially one that comes in so late. The immunities should have been spread out over the levels as cruelty is, if they wanted to replace cruelty.
I think it's a fair trade-off to gain all of those immunities at level 15. It's not like you can use ALL of the cruelties you gain at one time anyhow, you can only pick one at a time.
At 3rd level, and every three levels thereafter, an antipaladin can select one cruelty. Each cruelty adds an effect to the antipaladin’s touch of corruption ability. Whenever the antipaladin uses touch of corruption to deal damage to one target, the target also receives the additional effect from one of the cruelties possessed by the antipaladin. This choice is made when the touch is used. The target receives a Fortitude save to avoid this cruelty. If the save is successful, the target takes the damage as normal, but not the effects of the cruelty. The DC of this save is equal to 10 + 1/2 the antipaladin’s level + the antipaladin’s Charisma modifier.
Bold mine for emphasis.
Anyhow, I digress. I've copied the RAW and shown where it doesn't allow anyone to take any cruelties. What doesn't matter is how people feel about the RAW of this class and its abilities in this thread.
well you have convinced me that is not a missprint, but i still think is a bad concived idea to substitute something you gain at 3 with something you gain at 15
well you have convinced me that is not a missprint, but i still think is a bad concived idea to substitute something you gain at 3 with something you gain at 15
Think of it as something to strive for then. If you live to level 15 you get some really cool immunities, making your PC a real bada$$ and hard to kill. All you give up are some conditions along the way that aren't as powerful, but could be useful if someone fails their saving throws against them.
It's basically the "capstone" ability for the most part since most people don't play much past level 15 it seems and AP's top out before level 20 and the real capstone.