Well I'm about six monsters into the game now and I think I've got the format of the game down. It's basically a puzzle game. The puzzle is how to get on to the creature in the first place. The first monster was simple: just walk up to it and start climbing. The rest haven't been so simple. It's usually involved getting the creature to lower a limb. Occasionally I've had to bait it to attack me, dodge the attack, then quickly climb up the weapon or limp before it pulls up. A couple of times I've been unable to figure out what to do. When this happens, the game gives hints. So far there's a general hint, then if I'm still running around not getting anywhere, the hint gets more specific. I don't mind this much since I prefer to progress through the game instead of wasting time not getting anywhere. In once instance the hint was something that, to me at least, was not obvious or intuitive at all. In other cases, I'm able to figure it out and feel good about myself.
The fights themselves are still always tense and exciting. However, I still feel somewhat bad once the fight has been one. I have noticed though that the creatures are starting to attack me first more often, and that because of this I don't feel as bad when they finally go down. But then I wonder, has news of my exploits spread to the other creatures? Are they using a good offense as their defense? Then again, the flying creature that I had to kill in mid-air didn't bother me at all until I shot it with a bow and arrow. I imagine that would piss most people off.
I'm mostly okay with the controls at this point. My main source of frustration now is that sometimes when climbing the beast they're unresponsive. Depending on where on the creature's body you are, it will try to shake you off. Depending on how hard it's trying to do this, my character can do nothing but cling valiantly for his life. Since there is a limited time in which I can hold on, I've run into situations where once I grab on to the beast I can't go anywhere because it's shaking too hard. So then I plummet to the ground, usually surviving the fall, and have to start from the bottom all over again. I guess this is a realistic game mechanic, but when I have one blow left to kill it and then get shaken off, I get frustrated.
All in all though, I'm enjoying the game. I've been playing it one or two monsters at a time, since the fights tend to be kind of exhausting. There are sixteen monsters in all, so I still have some ways to go. There are no hints yet as to the motives of the disembodied voice that's tasked me with killing these beasts. I'm looking forward to finding out what's going on there.