Well, so far so good. Just that there were a few lines that could have been drawn out better, slightly sloppy in some areas.
For example:
they yell "We have come under decree of King Andrew the IV, and are here to kill you."
Perhaps a better method:
Five heavily armoured knights burst out from the undergrowth, battle lances at the ready, their steads flaring, staring straight at me.
'So the King says, so you shall die.' The tallest of them echoed emotionlessly, lowering his visor. Without another word, they charged....
Well, that was just some quick advice on my behalf.
Also, it looks kind of cheesy if you mention things like 'They have 3 catapults and 100 soldiers!'
Rather, a better phrasing:
'Their numbers are numerous, we cannot hold for long. They bring death with their cruel war machines.'