The Gunners dominated the hosts from the first whistle and could have scored more goals if not for their own profligacy.
Arsenal ended a run of 29 games without a win at a traditional big-six side as Pierre-Emerick Aubameyang's second-half penalty gave them victory over Ole Gunnar Solskjaer’s men.
"I wanted to keep it quiet from the players. I wanted to generate belief and I asked them to be who we are as a team right now,” the Spanish tactician told Sky Sports after the game.
"I’m delighted because we played with a lot of courage and big personality.
"They played a really tricky formation with four midfielders and two that constantly strain your back four. We could have scored twice in the first half and when we scored the goal we had to manage those moments. There was high stress, it is different to any other ground.
"Individually you have to win the fights and step up to the occasion and the performance of every player today was top drawer."
"I’m glad it’s finished. Every striker needs goals and in these moments we have to create more for Auba. He has scored the crucial goal and it is going to lift his confidence."
Next up for Arsenal and Arteta is a game against Norwegian side Molde FK in the Europa League on Thursday.
