This is quite the ambitious film! I love that circling shot at 1:04, that was totally awesome.
Grassy footsteps always feel a bit weird to me, as the hard plastic plates underneath the minifigures doesn't look anything like squishy grass. Also, the sword sounds didn't always match the action seen, with bigger whooshes paired with small swings, or clangs paired with a little scrapping together of the swords.
That being said, even if they didn't perfectly match the visuals, you've found some pretty good sounding effects. Did you record those sounds yourself? I'm not seeing any sound credit. If so, great job!
The ending completely lost me as far as the story went, but maybe that's just me.