Idea 1
just like in pathfinder, if you beat a DC by 10 you crit +10 Crit and Crit Damage
Idea 2
Crits can happen if you have Favoredon a roll and roll max for any [[Favoredce you have. This increases the degree of success by one step (turning a regular hit into a crit or a failure into a hiFavoredreverse when you are [[Hinderedf you are [[FHindered roll 1 on the [[FaHindered you lower the degree of success by one step (turning a crit into a regular hit and a failure into a critical failure for example).
Critical Damage
Unless other wise stated, critical hits on attack rolls and critical fails on saving throws always deal critical damage.
crit damage will be calculated differently however
you will take your regular damage for the attack and take its max. This means that all weapons should list their maximum damage beside them on the character sheet to make the math easier. You then roll your Weapon Dice again and add it to your maximum damage
Saving Throws
Critically throwing on a saving throw you will take your regular damage for the attack and take its max.