to me teo and luna is suicide. chameleos is easier. if you are a long sword user use a fire attribute long sword or if you have devil slicer then hack away. just keep attacking the head. its important that you have either full tigrex or death stench armor with you and you must have well-done steaks and energy drinks, flash bombs are very useful.
for great sword just have a fire attribute grat sword or a high base power.
it is also a good way to get horns, but you need a high defense to cope up.