For Saves (page 6), I assume you mean 16 or higher on a d20 and not on 2d6+bonus, right? Maybe have a unified mechanic for both (saves and skills) rolls, like 10 or higher to save.
Answering my own question: on page 13, it says to use a d20 for combat and saves. Not sure if it's a great idea to mix PbtA and d20 mechanics in the same game. I recommend sticking to one or the other. Check World of Dungeons by John Harper to see what I mean.
Page 26:
INCOMING DAMAGE
When the player character is hit, modify the damage dealt per die by dividing it in half and rounding down, then summing it together to get the total damage.