Hasaacas beat Gold Stars 3-1 at the Accra Sports Stadium on Sunday to qualify to the Ghana Premier League with one match to spare in the play-offs.
Frederick Quayson grabbed a brace and a strikefrom substitute Isaac Eshun wrapped up the points for the 'Giants of the West'.
Simba Adams got the consolation for the Bibiani-based side
The Sekondi-based side will be making a return to the top-flight after three seasons in the second-tier league.
Hasmal are now on top of the zone II promotional play-offs with six points and still qualify even if they lose their final match against Tarkwa United.
The Giants of the West have a better head-to-head against closet challengers Gold Stars who are on three points.
Hasaacas will join Inter Allies and Bechem as the promoted sides from the Division One League Middle League.