The Gunners have failed to score more than one goal in a Premier League match since October 5.
But they managed to fire in four past Rapid Vienna on Thursday, and Arteta hopes that form can continue for this weekend's north London derby.
Speaking after the game, Arteta said: "The aggressiveness is always there but the margins in the Premier League are so much smaller, when you make a mistake you pay the price.
'We haven't been as ruthless in the final third in the Premier League as we have in Europe, but I liked the reaction of the team and the performance today.
"Many of them I am delighted with, the injured players who been out for so long they worked so hard we are so glad to have them back, to add numbers to the squad.
"[Alexandre] Lacazaette it was great to have him on the score sheet, some really good individual performances and some of the good from the young boys as well.
"The club has made such an effort to make sure today everything was set up in the right way so hopefully the fans had a good night, they were tremendous for us."