Portal: Underground Story Map

Description
This Portal story is based on the MTN Portal Story | Part One!
This mappack includes around 75 levels, with around five hours of exciting gameplay.
The longest custom map so far.

We have change the name from "MTN Portal story" to "Portal | Underground story".
This story includes part one and part two and also a training room for the second part.
We have also renamed the "part one" and "part two" to "Project One" and "Project twO".
We hope you like these new names.


Features: Project twO

# Based on MTN Portal Story | Part One.
# More than 45 test chambers.
# Level design similar to the original Portal style.
# Level difficulty is balanced, like the original.
# New gameplay elements, e.g. super jumps and red laser.
# Easter eggs and secret chambers.
# Several paths and two possible endings.
# Awesome storyline.
# Epic moments/endings.

Don't forget to read the "Read me!"

Have Fun!