Ok I just went ahead and tried it to confirm, you can't kill the tiefling children, they just go down to and stay invincible on 0 HP.

I agree with the OP that there shouldn't be any difference between being able to kill Goblin children and those of any other race.

Either they should all be killable, or none of them should be.

Last edited by DumbleDorf; 18/10/20 12:08 AM.