"It was a tough match for us. MMUST have really improved as a unit because we could not score more tries. Defensively, their tactics are working but am proud that our team did well," said Achayo.
"It is going to be another tough season for us as every club will want a piece of the champions but we are ready. Some of our players are out on international duty but we are ready. The players available are working hard and we believe we have the manpower to start with a win."
In Nairobi, KCB picked their ninth Impala Floodlight title after seeing off Nondescript 20-3 in the final staged at the Impala Club at night.
Oscar Sarano and veteran Andrew Amonde had a try each off the mauls as Isaac Njoroge and Levy Amunga converted respectively. Njoroge added two penalties.
Salem Benson slotted over Nondies penalty as they missed three penalties and two-drop goals.
The victory saw KCB equal University of Nairobi's record of nine victories at Impala Floodlit.
KCB aim at recapturing Kenya Cup and Enterprise Cup titles they lost to Kabras Sugar.