In 1922, Achiu began attending the University of Dayton and joined its sports team, the
Dayton Flyers. There, he was the first
person of Chinese descent to play college football. When his teammates had difficulty discerning how to pronounce his last name, he reportedly told them: "Sneeze it and you'll get it", earning him his nickname "Sneeze". Achiu earned a national reputation as a standout four-sport athlete in football, baseball, wrestling, and track, earning nine
varsity letters. Achiu excelled particularly at football in college and earned attention playing there. During his freshman year, he
started as the team's halfback, though also played
defensive back and
kicker. That year, he made a name for himself as a fantastic
punt returner. He was singled out for a game-winning
field goal against
Carnegie Tech and his performance during a
shutout game against the
University of Cincinnati. During his career at the university, Achiu was considered the most fun player to watch. The
Dayton Daily News described him as "the greatest drawing card in the history of the school and also the most popular performer with the fans". He recounted that during his first year playing football had only fifty attendees, but by the time he left, the school had built a 10,000-seat stadium.As a runner, Achiu matched the national indoor records in the
40-, 50-, and 60-yard dashes and had a ten-second dash. He also participated in the
relay. As a baseball player, Achiu was a talented
outfielder, notable for his impressive speed on the field. In 1926, his teammates elected him captain and the following year he worked as an athletic trainer and manager for the football team.
Walter Camp, widely seen as the "Father of American Football", described Achiu as one of the "great
backs" of the game. He was a strong
runner and notable for his unusual sidestep approach – described as "snakelike" and "dazzling" – and speed, which caused him to be in heavy coverage regularly. He was a fairly strong
passer, but highly regarded for his
blocking, which seemed to outpace his relatively small frame. In 1925, he won honorable mention
All-America honors. The same year, since he was ineligible to play football the following year, Achiu expressed an interest in collecting other Hawaiian football players who had honed their skills in college and putting together a team. He also received several offers from prominent Hawaiian high schools to return and coach their teams following his graduation in Dayton. Achiu succeeded academically in college as well, working with the Monogram and Engineers Clubs. He graduated from the University of Dayton in 1927 with a degree in
electrical engineering and began work for
Delco-Remy. Upon graduation, the university described him as "one of our most versatile and proficient athletes" who was "deadly with the club in
the diamond pastime [and] a ten second man in
the hundred". ==Professional career==