The phrase "achieving his first" is correct and usable in written English.
It can be used when discussing someone's initial accomplishment or milestone in a particular area or activity.
Example: "After years of hard work, he finally succeeded in achieving his first major award."
Alternatives: "reaching his first" or "attaining his first".
In 1914 he formed a company to produce the comedies of Harold Lloyd, achieving his first success with Just Nuts (1915).
He taught himself to dig, first as an amateur, then as a peripatetic excavator for the Ministry of Public Buildings and Works, the predecessor of English Heritage, finally achieving his first permanent job as a lecturer at Birmingham University in 1963 at the age of 42.
In the United Kingdom, the song debuted at number two with sales of 54,817 on the week ending April 15 , 2012 held off from achieving his first number one in the country by his own protégée Carly Rae Jepsen, with her single "Call Me Maybe".
But if Krechelov had not become befuddled by his time pressure, he would have been able to draw the game and keep Wojtkiewicz from achieving his first-place tie.
He made 20 saves in achieving his second victory of the season against Montreal.
But Osborne remains on target to create a surplus in five years, achieving his third target.
Since achieving his fourth straight victory on June 17, Seo has lost his last four decisions; the Mets have not won in his last five starts.
Gosden also has hopes of achieving his ninth Group One success of the year on Saturday with Tendu in the Cheveley Park, her owner having paid £20,000 to add her as a late entrant on Monday.
But, after achieving his third promotion with Bournemouth, Fletcher feels that he will be surplus to first-team requirements in the Championship.
Graf became an official ace upon achieving his fifth victory on 6 September 1941.
But Copeland achieved his first goal Saturday.
