In the first level, playing as Sharline, I found a way to beat up
the Tigella more easily.  It's near the crystal pillar so you'll
have no trouble finding it.  Get as close as you can possibly get to
it.  I don't mean arms length I mean right up against it!  When it
attacks from this distance, it can't get you cause it's necks too
long and it's smoke will just fly over your head.  keep in mind
though, when you're attacking, that with each attack, with some
weapons, you get further away.  So you'll have to just keep running
up to it!  Wait till you're power gauge is all red, then press the
button hard to knock him away.  Of coarse you'll have to run up to
him again, but it all pays off when you get that juicy blue fruit,
right?  Try it.