Looking at Ashley the wrong way
When Ashley is following you find something somewhat high off of the ground and climb on top. Then tell Ashley to stay put. Go below where you left Ashley standing. When you are underneath and you try to move the C-Stick up to look at Ashley, she will ask Leon what is he looking at and call him a pervert.
Later in the game, the Merchant has a gun called "Killer7". This powerful magnum shares the name of an upcoming title by Capcom called "Killer 7".
If you don't push any buttons at the title screen. Then after about a minute or so a never-before-seen trailer will play. If you do the same thing at the title screen after the 1st trailer has played then the trailer from The Tokyo Game Show of 2004 will play. It will play these 2 trailers for as many of times as you don't push any buttons at the title screen.
Title Screen Controls (for the Alternative Title Screen)
Use these controls during the title screen.
C-stick moves the backround left and right.
R zooms in backround.
L zooms out backround.
Del Lago Secret
When you first enter the area where you fight Del Lago, the monster in the water, head down to the dock. If you shoot the water about eight to fifteen times, you will get see what he thinks of you.
Alternate music in "Assignment Ada" credits
After you watch the credits at the end of "Assignment Ada" it will ask you if you would like to watch the credits again. Choose "yes" and it will play the credits again but with different music.
Leon does jet ski jump.
In the final area when Leon and Ashley are on the jet ski, if you press the L & R buttons and jump just before you do this, Leon will do a spin on the jet ski.
This trick will summon cannon fodder your way. In the graveyard area, with the church where Ashley is actually held, there is a bell tower connected to the church (to its right). If you ring it, they will come. You can shoot it three times only. The first and second waves of enemies will come from the cave entrance and the third will come from the bridge area.