The Zips (5-4) entered 19th in the nation with 8.6 3-pointers per game and connected on 11 of 34 treys Tuesday, including Walsh's 4-of-9 performance.
Marshall entered the game with 29 blocked shots, more than 146 Division I programs, and is averaging 4.3 blocks per game.
Alex Abreu came into Tuesday with 323 career assists and had six to surpass Nick Dials (326) for sixth on Akron's all-time leaderboard.
Eleven Akron players scored points in the game.
Tevin Hammond led the Golden Lions (1-9) with 14 points on 6-of-13 shooting. Arkansas-Pine Bluff shot just 29.1 percent (16 of 55) from the field and hit just 2 of 7 3-point attempts.
Akron outrebounded the Golden Lions 50-24, winning despite 25 turnovers.
Mike Krzyzewski says he has good reason to be excited for next season thanks to a combination of Duke's incoming freshmen and a core of experienced upperclassmen.
Georgia guard Juwan Parker has been awarded a medical redshirt, leaving him with two years of eligibility, after missing the 2015-16 season with a partially torn Achilles tendon.
Forward Trevon Bluiett has withdrawn from consideration from the NBA draft and will return to Xavier for his junior season.