Borussia Dortmund coach Jurgen Klopp praised his side's relentless desire to attack after watching them tear apart Stuttgart 6-1 in the Bundesliga on Friday.
Last season's Champions League runners-up came from behind to beat a Stuttgart side that had been unbeaten since the end of August, with the hosts scoring four of their goals in the second half at the Signal Iduna Park, including a hat-trick from Poland star Robert Lewandowski.
It was Dortmund's fourth successive win in all competitions and left them provisionally top of the table, two points ahead of Bayern Munich before the reigning champions try to equal the Bundesliga record of 36 matches without defeat when they go to Hoffenheim on Saturday.
"We could have been 2-0 up before their goal, but we lacked the final touch," said Klopp.
"There were some lapses in concentration, but after the break we did not click on the pause button again and played a great game.
"In the second half our focus and final touch were much better, and the final whistle was the only thing I didn't like...and that you can also only get three points for such a display."
Since beating Arsenal 2-1 in London in Champions League Group F, Dortmund have scored nine goals in two games in beating local rivals Schalke and now Stuttgart, although the nature of the goal conceded to Karim Haggui early in Friday's match did leave some cause for concern.
"It's disappointing to concede from another set piece, but we showed a good reaction," said Kevin Grosskreutz, who again started at right-back against the Swabians.
"It's going to be a tight game against Arsenal, who are another world class team. But we want to win."
Arsenal, Dortmund and Napoli are level at the top of Group F after three games with six points each.