Yeah Wrath, I just fell in love with the world of HK, the atmosphere, the lore, the attention to details. Apparently there is a type of bug called Menderbug that repairs all the signposts that you break, but it is very rare and he hasn't spawned for me yet. After my post last night I got the Hunter achievement, and I almost got the flower quest. So today I think I'll finish the flower quest and do the second ending just to see it and see what my completion percentage is at.
Freyj, for the Colosseum's third challenge what helped me a lot was the shaman stone to quickly wipe out the flying enemies that spit projectiles. Some people swear by the dreamshield, but I never use that charm at all. The toughest part is the end where you are jumping off walls and you have to fight off a shitload of battle obbles that shoot projectiles everywhere. That's where the vengeful spririt spell with the shaman stone equipped becomes essential.