The Brewers fell to the defending champions 5-2 in a match played at Moi Stadium, Kisumu with the winger scoring two goals for his team. Kenneth Muguna scored a brace for K'Ogalo with Charles Momanyi, Boniface Omondi and Nicholas Kipkirui scoring a goal each.
The former Chemelil Sugar forward is confident the Brewers will register a positive outcome in their next league assignment.
"The 5-2 defeat to Gor Mahia was not what we had anticipated, the defeat was an embarrassing one for us," Muchiri told Goal on Thursday.
"We have no alternative but to bounce back as soon as possible and start winning. Our next league game is a must-win for us because we have an objective to realize by the end of the season."
The 23-year old believes he can do better for the Robert Matano-led team this season.
"I want to continue performing well and it calls for consistency to achieve the target. Last season I scored 12 goals for the team but my target this time around is higher, it is a challenge which will make me an even better player," Muchiri concluded.
Tusker will host 2008 champions Mathare United in their next league assignment on Saturday.