The Gunners have been highly disappointing in the Champions League so far this season, with losses to both Dinamo Zagreb and Olympiakos, games they were expected to win, leaving them facing an early exit from Europe.
They now have back to back games against Bayern Munich on their busy schedule, needing positive results against the German giants to have any chance of reaching the last sixteen.
And Wenger has urged the north London side to attack Pep Guardiola’s in-form team to try and achieve a positive result during Tuesday’s clash.
"The confidence level is there, the needed result is there as well – we know exactly what is required [because] a 0-0 is not even a good result," he told arsenal.com.
"To score goals, we have to attack. It is true that [we have delivered big results] before, but we want to do it again. What we want to do is play up to our level - that will be needed because we play against a big team."
The Gunners boss is also hoping their impressive league form has provided the perfect preparation for the game against Bayern.
His side have been strong in recent weeks, with a top performance to beat Watford on Saturday having come after an even better display against Manchester United before the international break.
Goals have not been a problem for Arsenal, with Alexis Sanchez in particularly fine form, and Wenger is pleased the Gunners are in a position to fully focus on winning their pivotal Champions League game.
"For us it a perfect run in our Premier League,” he added.
"On the other hand [it is] also perfect preparation for the Bayern game because we had no injuries and we got the three points. We are now in a position where we can really focus and give everything on Tuesday night."