I dont know the game, have never played the game, its actually a game i also dont own...
Im working from this char sheet
https://www.arustmonsteratemysword.c...Sheet%202a.pdf
and I dont know how Abilities and Skills work but as a guess I went with
Abilities
being 3d6 with bonuses for higher numbers and penalties for lower numbers
Roll -
2d10+(p2) where (p2) is the bonus/penalty
Skills
being a simple value from -5 to +5 but also getting the bonus/penalty from the parent ability
Roll -
2d10+(a)+(p1) where (a) is the bonus from the Ability and (p1) is the bonus/penalty for the skill
Of course these rolls could be completely wrong but this is an example of how you might do this in
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