Hint: Rebecca's Dodge
Press and hold the R trigger then quickly release and press again. If done correctly, Rebecca should step/dodge backwards quickly to avoid damage. Works best on zombies in close quarters.
Hint: Faster Shots
To lay down zombies faster, lock on to them by holding the R trigger, then rapidly tap the A button swiftly instead of holding it down for semi-auto fire. Your character should fire more quickly.
Hint: Green Chemical
When you get the green chemical from either the container in the infirmary or underneath the church, you can use it to heal your poison status.
Hint: Easy kill with Magnum Revolver
If you have the magnum revolve and you want to kill a leech humanoid without using a fire type weapon, just point your gun at its feet. You won't have to worry about any leech.
Hint: Pass The Leech
In the train, when Rebecca faces the first leech monster, you can defeat him without any problem or loss of health. When the fight starts, immedietly turn around and run back towards the stairs. Instead of going down them, a cut-scene will ensue, and you can move on with the game.
Hint - Leech Hunting Basics
When you start the Leech Hunter game, split Billy and Rebecca up, and switch to Billy. You should do this because Billy can take alot of damage, way more than Rebecca. Do not grab any leeches yet, save all that for last.
Go to the sewer and grab the shotgun and shells, then go up the ladder at the side, to the train wreck, kill all the hunters, and without picking anything up, go back to the start and start from the place you think are the hardest to get through, and kill the strongest monsters, and only the monsters that get in your way, to save ammo.
After going room by room, killing the monsters that you need to kill, go to Rebecca and partner up with her. THEN grab the leeches, you'll have a much easier time navigating through the game, without any monsters.