Woodys Secrets:
on the first level collect 100 coins and then go to see Hamm he will show you the way to woodys workshop where you can get tips and cheats.

Invincibility Trick:
When buzz is about to die quickly exit the level then return straight away its difficult to do but it works if done right.

Unlimited Lives:
On Alleys and Gullies level go to the market passed the roadblocks at the end and jump in the pool go through the tunnel until you get to the life. Keep doing this.

Pedal Reload:
Plug a controller into socket 2. You can use Square, Triangle, Circle and X as reload buttons

Debug mode:
At the title screen press X, Circle, Square.

Green laser locations:
Green lasers will allow enemies to be killed with a single shot. They can be found at the following locations.

Andy's House:
When you go to the garage, find a way to get up to the van. When you get to the top, you will see a green laser.

Andy's Neighborhood:
Find your way to the location with a broken car. The green laser should be right in front of you.

Alleys and Gullies:
Turn to the right when you see the first airplane box.