The goalkeeper has only kept two clean-sheets in the last eight games for Hearts in their wins over Kotoko and Ashgold.
But Akurugu says he wants to end the first round a by recording his third clean – sheet.
“I am never happy when we win and I end up conceding a goal,” Akurugu told the club’s website.
“I am a very critical person and I know I am judged based on the number of clean-sheets I keep in a game so I am working really hard with the defenders to be able to play games without conceding a goal.
“My target is quite simple: before every game I try to go on and not concede a goal, but things do happen in football that sometimes you cannot do much about. However, we are working our socks off to be able to keep things tight at the back to the end of the game on Sunday.
We are not expecting an easy game against Liberty because they know we have been doing well lately and they will be coming at us from the blast of the whistle.
We will also communicate at the back and defend as a team to be able to leave Dansoman with the three points and if possible without even conceding a goal.”
Akurugu also thanked Hearts fans for their support and prayers and urged them to continue supporting them.