Unlimited Lasersight ammunition:
Have the crossbow or revolver combined with the Laser-sight. Zoom in, hold L then
press Start. While still holding L, select the pistols and press A. While still holding L,
exit the pause screen. The sound of the pistols being drawn will be heard. Note: This
can be repeated as needed.

Hint: Turning on all the switches in the Star Room in the Lost Library:
First, start at the switch across from the reset pad. Face the reset pad and number
each switch starting with the one you are at as "1" and then going left, 2, 3, 4, up to 7.
Then, activate the switches in the following order: 1, 3, 2, 7, 5, 4, 6.

Hint: Save health packs:
You can save health packs by going to a different level, then coming back for health
because the levels are so numerous and close together. 

Hint: Save explosive ammunition:
Save explosive ammunition (grenade launcher, Cross Bolt, etc.) for tougher
opponents when fighting the skeletons by using the shot gun against them. Get the
skeleton between you and a ledge and blast it. The skeleton will fall off the ledge and
cease the exist. Since shot gun ammo is more prevalent in the game than the
explosive ammunition, this will allow you to save it times when there are no ledges to
help.

Hint: Level 1 skull:
At the first obstacle of the game, jump down and pick up the skull. Instead of using the
stairs (over to the left), jump, grab the ledge and press Up to quickly keep going with
your trainer.