Rico Gear (two), Miles Benjamin, Sam Tuitupou and Craig Gillies all went over before the break to book the Warriors' passage to the European Challenge Cup semi-finals with a 36-26 win.
And with their Guinness Premiership survival all but secured, Ruddock believes his side have stepped up to the plate in recent weeks.
He said: "The last month or so has been really tough for us and we've really fronted up and delivered the goods in some tough, physical games.
"When you do that there is always the chance you might not quite be there after six or so games. That was the case today, but I don't want to take too much away from Montpellier.
"I though we were really good in the first half, but we let them get back into the game in the second half when we didn't nail down the good early chances we had.
"After the break we couldn't quite get the clear ground we wanted. With the ball in hand we looked great and played with a lot of purpose and skill. We had some good decision-making and accuracy at times.
"What we didn't do was tackle to the same level which allowed a very good Montpellier side get back into the game.
"It was evident they didn't want to compete with our line-out. They wanted to keep the ball in play at all times and were a quality team with the ball in hand.
"They forced us to make a lot of tackles and really forced our defence at times with their carrying game."
It took Worcester just three minutes to get the ball rolling as Benjamin ran in under the posts only for the French side to hit straight back through skipper Fulgence Ouedraogo.
Gear then got in on the act on 20 minutes, capitalising on good work by Benjamin and skipper Pat Sanderson.
And seven minutes later centre Sam Tuitupou left Montpellier defenders in his wake with a stunning score.
The French side though would not back down and on 32 minutes former Gloucester centre Cristian Stoica went over.
But Worcester effectively sealed the win with two tries in four minutes before the break through Gear and Gillies.
Montpellier did rally after the break but despite getting tries through Fabien Rofes Warren Britz, the Warriors survived a nervy finish.