Arrow in Leg -When cutting the arrow, you can just hold one arrow key and it will auto cut for you. You will lose some health but not enough to matter. -Click for the hammer when the power is just below the top

Plague -Pointers are the tips of the bottles and knife, this is helpful for aiming correctly -Don't try to cut too fast or the knife might not register correctly -As long as you are close when removing the leeches, they will be taken away with the tray

Vampire -This one is mostly just about timing for the stake, hammer, and axe