Tetteh, a new signing from Ghana Premier League side Bechem United, gave the hosts the lead when he headed in a corner kick before half-time.
After the break, Wa All Stars equalized through new signing Seth Amoateng and Tetteh once again scored-this time from the spot- to give the Crescent the lead again.
Tetteh’s third was from 12 yards after a player was brought down inside the box.
Compatriot Augustine Okrah played the second half of the friendly.
Wa All Stars will leave for Dubai tomorrow (Friday) for the second phase of their pre-season training