The Black Stars striker gave his side the lead in the second half, drawing level with Roger Milla as the highest-scoring African at a World Cup
Asamoah Gyan says Ghana were "tactically perfect" in their 2-2 draw with Germany and believes they should "go all out" when they meet Portugal in their final World Cup group game.
The Black Stars came from behind to go 2-1 up through Andre Ayew and Gyan but a Miroslav Klose goal rescued a point for the Germans in a thrilling encounter.
And Gyan praised and congratulated his team for their performance against Joachim Low's side.
"It was a great game," he told BBC after the game. "I’d like to congratulate the team, we believed in ourselves. Against a top team like Germany, we had to fight to the end and it was a fair game today.
"I think it was great work, tactically we were perfect today. They are good in possession. What we planned today worked really well for us."
Gyan's goal was his fifth in a World Cup finals, making him the joint-highest scoring African in the competition with Roger Milla, and he admitted he was low in confidence after missing the a lot of chances in the 2-1 defeat to USA in their first game.
"I was just waiting for my chance to happen, I had a couple in the first game so I was a bit nervous."
In order to progress into the second round, Ghana need Portugal to beat the USA on Saturday night and then must beat Paulo Bento's side themselves, and Gyan says his side must attack in their last game.