Highscores

Satellite- 1,010 or somewhere along the lines of that
Roll- 11
Single Hang Time- 4.57
Total Hang Time- I can't remember but I beat the gold record
Marauders- 62
Hoverboard- Same as you, I think
Single Distance- I can't remember but I beat the gold record
Total Distance- I can't remember but I beat the gold record
Eco Grid- 1,015
Beam Reflexor- 17,045 or somewhere around there
Wave Concussor- 17,050 or somewhere around there
Race Track- 2:58
Wasteland Run- 4:15
Turret- 41,142 or somewhere around there

Please work harder on getting those orbs.

For the single hangtime,

quote

Just use the mass inverter on your vehicle.

For the marauder challenge, it takes some practice. For the Wave Concussor, it also takes practice as well. For the Roll Challenge, just use the Heat Seeker. It's very unstable and even the slightest nudge will make it roll over. You say that you beat the Wasteland Run in an excellent record so it shouldn't matter. I would suggest that you buy the "Unlimited Vehicle Turbos" secret on your secrets menu and use the Tough Puppy for the Racetrack Time Trial challenge, though. If you have the Jak 3 guidebook, you should know where all the orbs are.

If you don't have the guidebook, I suggest that you should buy it.

Yes, the Eco Grid game is VERY hard to beat the gold prize but it just takes practice.

Sattelite- 1497 (took SOOOO long)
Roll-8 (still trying to get that)
Single Hangtime- 4.85secs
Total Hangtime- 24.67secs
Marauders-64
Hoverboard- 77832
Single Distance-231.9
Total Distance- 906.4
Eco Grid- 232 (i haven't gone back to try for silver and gold yet)
Beam reflexor- 17652
Wave Concussor- 11937 (still trying to get that)
Race Track- 2:57
Wastleland run 4:24:32
Turret- 7650 (haven't gone back to try for bronze, silver or gold yet)

i'm currently doing normal mode and have collected 530 orbs.