the easiest answer is for this game is when there is a question mark thing that u have to go get the orb then say if you miss it but if you get it before time runs out you fail but you still get 3 pre orb
There are 286 orbs in total.
EXTREEMLY DIFFICULT you have to get a lot of precursor orbs and get the invinsibility thing
you have to buy the replay thing with precursor orbs
i unlocked one once , you need to get lots of precursor orbs
when you get all the precursor orbs, you can go to the menu by pressing start and press on something that will let you use precursor orbs to by cheats like unlimited ammo,unlimited dark jak,unlimited light jak,hero mode which would let you start a new game with all your weopons that you got in the first game U also Get A New Costume Aswell.. But You Have2 Get All 600 Precursor Orbs!
600 it says in the secrets menu
yes
Jak and Daxter the Precursor Legacy. Daxter. Daxter 2. Jak 2 Renegade. Jak 3. Jak X combat racing. Jak and Daxter the Lost Frontier.
there are only tips and tricks and where to find the precursor orbs locations unless you have a cheating devise that messes up the game code in your favor like action replay the only cheats are to get the precursor orbs and use them(if you get all precurser orbs your neck tie thing that he wears over his face in a sandstorm like a mask turns green) :)
look for them around the city
YOU CANT you have to find them the only way is to hack into the game which is what cheating devices do sorry how unfortunate i would be doing it right now if you didnt have to use a cheating device :(
Jak 2 Has many secrets but no official cheats. the only real cheats come from obtaining precurser orbs. i have the game and have all the orbs so if you are needing help on where or how to get them just pot a question asking about it.