And coach Tony Popovic believes his rapidly-maturing sensation is better placed than ever to succeed.
Irankunda, 20, underlined his raw potential with a scintillating 25-minute cameo in Australia's 5-1 win over Curacao, scoring a terrific five-minute brace.
"I'm always focused, always want to always make an impact, and always want to play well," Irankunda said after being named player of the FIFA Series.
"And he (Popovic) has the belief in me. And with his belief, I'm able to do what I do, which is score from open play now.
"You've seen it a lot now with the national team, I'm scoring from open play and not just from set pieces. So he gives me the confidence and it's exciting to see."
Irankunda wouldn't buy into whether he would rather start than be a substitute - underlining his increased maturity.
Popovic dropped Irankunda, then a Bayern Munich forward, in November 2024 and made the then-teen sensation earn his spot.
Irankunda got to work during a loan stint at Grasshopper and has thrived since moving to Watford.
"He's a young man who's just growing in maturity, not just on the field, but I think off the field," Popovic said.
"He's adapting, he's learning. Very good young man. We've always had a good relationship, and we just want him to get better.
"And you can see today, when his mind is clear, he wants to contribute, whether that's a start, whether it's coming on, whether that's coming on for one minute.
"And that's progression, because maybe in October, November, his mind wasn't so clear. And you can already see four or five months later, it's normal. He's young, he's 20 years old. He's a wonderful talent.
"We want him to be happy, want him to enjoy his football. We also wanted him to understand that he needs to work. Talent's not enough. It never has been."
Popovic believed Irankunda was starting to get to grips with the grunt work required.
"He wants to learn, he wants to get better at all aspects," he said.
"And with good people around him, I think he can just keep growing and improving."
Popovic was delighted with how Irankunda, best known for thumping long-range goals, created his goals - getting into the box and dribbling.
For the first goal, Irankunda dribbled through the Curacao defence and finished at the near post.
He celebrated with a backflip, then caught a rhinestone glove thrown to him by a friend, put it on and danced like Michael Jackson.
Fellow attacker Riley McGree said: "He's electric, he's unpredictable, he's everything you want from a young player.
"From the personality to the technical ability, the tactical ability, he can in the attacking sense do it all.
"He does have the world at his feet. I'm really excited to see where his career goes."
Irankunda and his teammates are ready for the next step: at June's World Cup.
The Socceroos will learn on Wednesday morning whether they play Kosovo or Turkey, who are meeting in a final qualifier, in their World Cup opener, before taking on the United States and Paraguay.
"We have one goal, which is to achieve something great, achieve something that's never been achieved before," Irankunda said.
"We want to be that group that goes all the way and potentially wins the World Cup.
"No-one has the belief in us, obviously, but we have the belief in ourselves to go do something great."
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