Go to the Yaka website, connect your Compass wallet, and use the faucet to get testnet SEI.
Go to the Swap page. Swap your SEI for YAKA, USDC and USDT.
Go to the Liquidity page and add liquidity to 4 pools : SEI-YAKA, SEI-USDT, USDT-USDC, USDT-YAKA.
Go back to the Step 1 link and claim your Achievement Milestones.