Seek and destroy: the correct path to follow
In the second door come out and go left, in the first door come out and go right, in the second door come out and go right, in the second door come out and go to the far left, get bracelet and carry on left until door, go right and in first door, go right and in first door, leg it until bombs go off and exit level through door at far right.
T-Rex Carnage
Scroll right all the time following the arrows. Any weapon is okay to use but avoid trying to kill the dark brown raptors as these are seriously hard. Once you get to the jeep, keep firing at the T-Rex to keep him at bay. The best place to stand is on the roof of the jeep. You can avoid the bullets from the enemy sprites by jumping up after they have fired. When the jeep starts shaking and the music reaches its height, it is time to jump onto the overhead vine.
Unlimited Continues
Once on the "Mission Select" screen, press L, L, L, R, R, R, L, L, R, R, L, R, L, L, R, R, L, L, L, R, R, R. If you entered the code correctly, you will hear a "bleep." Once this is done, you can enter any mission with unlimited continues.