Personal impressions:
* I find it very majestic how dragons fly in the air!
* The hard thing on fighting a dragon is not the dragon itself... it goes like this:
The dragon lands beneath a mammoth and does his fire-breath on it.
You think: 'I have to protect this peacefully animal'; and shoot an arrow at the dragon.
The giants think: 'He/She is shooting arrows in the direction of my mammoth! I have to kill him/her to protect my animals!'
And then you have to fight a dragon, two mammoth and a giant. Plus some wolves and saber-cats that get mad because a dragon did burn their fur...