For this trophy, you need to get to the upper volcano mini playfield using the ramp on the far left. Hit that ramp 5 times to spell 'Titan.' Once you spell Titan, you will be free to go up and down (this can be done over multiple balls).
After 'Titan' is spelled, you will need to hit the ramp on the left side of the upper volcano playfield (it will be lit up). Hit it hard enough to make it all the way to the top to awaken Chronos and discover that volcano wasn't actually a volcano (gasp!). Once he is up, hit him to get him to open his mouth, then hit the ball into his mouth to lock a ball towards the Chronos multiball. Once you lock a ball, you only need hit him and then get in his mouth two more times. Lock 3 balls to start the multiball and unlock this trophy.