That capx isn't going to help you with that. You are going to have to rewrite portions of it - change various things.
Best way is to start at the beginning. It is time you start doing something. The only way you are going to figure it out is to build something simple. Lets start with movement.
Homework Assignment 1:
Get you spider to move towards a click.
Once you have that...
Homework Assignment 2:
Get spider to move towards your mouse click, then change direction to new click.
Once you've done that...
Lets focus a little on spider web.
You aren't going to add it in - not yet.
Start new project. Start at a very basic level. Why don't you build a health bar. It is the exact same principle and very easy to do, it will get you writing your game and you can expand on that once your confidence gets better.
So health being 100 points.
We will later exchange the 100 points to the distance traveled type deal.
But start small. 100 points = 100 pixels. Try 400 pixels etc etc.
Play with it, get to know it.
I am purposely not going to write this out for you. This is basic stuff, and there is loads of documentation available. It's time to get you hands dirty.