Hi.
I've stumbled across a few situations where I had to do several dicerolls in order to succed.
Example: Squishing Edowin's tadpole and (iirc) the Nettie situation.
This is less than ideal design. If something should be hard to achieve then up the target difficulty. Don't make us roll twice.
Noone is is saying "Ah, but did you really hit" and make you roll again when you hit a goblin the first time.