The striker paid tribute to his coach after netting a double as Croatia retained their chances of progressing from Group A
Mario Mandzukic hailed Niko Kovac's tactics after Croatia eased to 4-0 win over Cameroon on Wednesday.
The Bayern Munich striker scored twice to add to an 11th-minute tap-in from Ivica Olic and a 48th-minute Ivan Perisic effort.
Croatia face Mexico on June 23 knowing a win would see them through to the round of 16.
It should be another stiff examination of Kovac's managerial ability but Mandzukic believes his tactics against Cameroon were proved spot on.
"We did everything possible. We have trained hard and done what the coach wanted us to do," he forward told Croatian TV channel HTV.
"He wanted an early goal and at half-time he told us to finish the game as soon as possible."
Mandzukic could have ended up with a hat-trick after, prior to scoring, missing a one-on-one with Cameroon goalkeeper Charles Itandje.
"It was a long run, I was tired and lost focus," he added. "But never mind, I never play to score but to help my team. My goals come as a reward.