After 22 hours and 22 levels into the game, I finally officially finished everything in the starting area (the big forest), the main quest started like finally like Chapter 2, and I decided to go to the plains area out of the two choices. But then the tired or bored feelings, which actually appeared since like 5 gameplay hours ago, finally become unbearable...
Then I decided to run all the way to the next big city for a little sightseeing, which took me a few good minutes, because I needed to run pass a few zones, and the road was looong and the areas were biiig...
Anyway, here's my feelings:
The world is big. Damn big. Unfortunately, too big. I've played all the TES and 3D Fallouts and Tworlds and GTA and even WOW, I don't know how big KoA's world is compared to them, but despite all the nice eyecandy KoA provide (it's true eyeCANDY, with all the bright colours) and lots of chests and lorestones and other stuff to find, the world feels too "flat", generic and in general too boring compared to the other games with a big world. I didn't have the same feeling playing WoW even though they look extremely similar in style, but in WoW I could at least run through or fly over dozens of different areas which all have different terrains (plains, volcano, snowlands, etc) while chat with people, but in KoA, the only terrain I had been in the past 20 hours was a big forest, sometimes it's a darker forest, other times it's a forest with some ruins, and maybe it's a forest infested with spiders, but all forests nonetheless...
When I arrived in the plains, I saw there was around 6 plains areas on the world map, and from what I saw while running through 3 of them just to reach the next major city, they all look like the same. Plains with yellow grasses, plains with some ruins, plains with a river... I can't imagine spending the next 10-15 hours running around doing random quests in nothing but PLAINS, PLAINS, PLAINS...
The fact that the game's soundtrack plays very sparingly (I think at least 60% of the time the game is quiet) and are mostly forgettable doesn't help to relieve the boredom too.
Another thing that sucks is the enemy variety. Guess what I met when I ran through the plains? More boggart, more human bandits, more trolls, more barghests. Some of their names don't even change! Still Boggart Plaguebearers. Still Mountain Trolls...
And there's too many chests...too many hidden stashes...too many BORING dialogues...too many QUESTS. Frankly speaking, the dialogues and quests aren't too bad, but the problem is mixing them (which are already quite generic) in a huge generic world would make themselves and the game iteself even more boring.
I've spent 140+ hours on Skyrim, finished the main quest, explored about 75% of the world, but I've never got such a boredom feeling on it. With games like Arkham City or Human Revolution, even though the game finished under 30 hours, there's still some magic to attract me back to it time and again. But in KoA, I've spent merely 20 hours on it, played through 30% of the game, and I already can't help but yawn the moment I turned on the game...
In conclusion, it's a pity really, this game is one of the few ones that have an almost perfect score at technical part and being bug-free. The combat is fun, and some of the boss battles were very challenging. The plot were becoming interesting too...but all the favour got watered down way too much in a massive generic gameworld.