If you can't be bothered to use pictures with the achievement names... at least make the font a different color (perhaps blue) and maybe make the font larger! Also... where you have the achievement name repeated because of the multiple steps to get it, only make the last occurrence in color, to make it clear when it is going to unlock.
As it is - the way the walkthrough is so jammed together - it makes it extremely easy to miss something (I missed two achievements on my playthrough, so I'm having to replay one of my chapter saves)!
It's really unnecessary to have the name of each chapter achievement spread-out within the walkthrough. I mean... what's the point?! Stick the name of the achievement at the end of each chapter (just once)! Besides... it unlocks automatically, and you can't possibly miss it!!