This is easier to get if you set up a multiplayer match with the settings a target of 100,000,000 and Take Everything. Get a friend to start you off, then if he leaves you can still play the table. However if you are both going for the achievement, only one of you will be able to get it as the State championship nets you 100,000,000 points upon completion, ending the round.
To get this achievement you must get to and complete the state championship mode. There are a total of 4 competitions to complete. These are, in order, Practice, Local, City and State. Each of the four modes are similar. They are all timed, and you have to do the mandatory tricks (They will be flashing), plus a number of free tricks, which can be a combination of any of the ones mentioned below. Once you have done the required mandatory tricks plus the number of required free tricks, get your ball to rest on a flipper for the remainder of the time. If you lose a ball during a competiton, you will have to try again. Once you have completed a competition and the flashing lamp turns solid, then you can sink your ball. You will not have to start all over from the start.
Tricks: I will mention the list of tricks available here for easy reference.
FLIP: Mini orbit on the bottom half of the board. Enter via the left side.
BACKFLIP: Mini orbit on the bottom half of the board. Enter via the right side.
INDY: Spell out I.N.D.Y which are located on the sidelanes.
AIRWALK: Spell out A.I.R.W.A.L.K. The A.I.R buttons are inbetween the Flip and Backflip Mini Orbits and the W.A.L.K buttons are just to the right of AIR, just above the right bumper.
BOARDSLIDE: Shoot the ball up the far right ramp to get a boardslide. This ramp will send the ball onto the top half of the board, which will then enable you to get the following three tricks. Ollie, Tailgrab and 50/50.
OLLIE: This trick is tricky. It's on the top half, and it is the highest ramp which has skate written in graffiti on it. If you hit your ball hard enough through the BOARDSLIDE ramp, then your ball will go straight round the top board, missing the bumpers, and keep going round to the top left flipper. Hit the ball with the flipper with enough force and you should get this trick.
TAILGRAB: Similar method to Ollie, but all you need to do is hit the ball a bit later to send it through the orbit located just below the ollie ramp. This will send the ball right round the top half of the board, back to the flipper.
50/50: I haven't done a 50/50 yet, but i believe you get it if you send the ball through the Tailgrab orbit 6 times. Again, i am not sure on this.
I think that is all the tricks there is on the table, so i will get onto how to start the competitions...
Step 1: To start a competition you must first spell out A.I.R.W.A.L.K to open the entry ticket hole. Once these have been lit the entry ticket hole opens. There will be a purple flashing lamp with the words entry ticket on it. Shoot the ball into this hole and you will start a competition.
Step 2: Practice mode requires you to do a FLIP and a BACKFLIP, plus 3 free tricks of your choice. You get 99 seconds to do all 5 Tricks. Don't forget to rest your ball on a flipper once you have done them.
Step 3: Repeat Step 1 and enter the hole. Local competition requires you to do a BACKFLIP, BOARDSLIDE and a TAILGRAB, plus 5 free tricks of your choice. With a bit of luck, you should be able to get both the BOARDSLIDE and TAILGRAB tricks in one shot. Once again you get 99 seconds to do 8 tricks. Don't forget to rest your ball on a flipper once you have done them.
Step 4: Repeat Step 1 and enter the hole. City competition requires you to do an AIRWALK and an OLLIE, plus 5 free tricks of your choice. Same drill, 99 seconds to do 7 tricks. A little tip here is to spell most of AIRWALK again (leave the W if u can, as it's the easiest to hit), before entering the ticket hole. Don't forget about resting your ball on a flipper once you do them all... Not worth the risk of losing your ball after all that work.
Step 5: Repeat Step 1 and enter the hole for your last competition. State championship requires you to do an INDY, FLIP, BACKFLIP and an OLLIE, plus 5 free tricks of your choice. Once you have done 9 tricks in total, rest your ball on a flipper for the remainder of the time and wait for your achievement to pop!!!
Hope this helps!!! And good luck!!