Portal Stories: Mel achievements

8.37%

Under the Stairs

9.41%

You Shouldn't be Here

9.55%

2056

MAKE IT STOP

9.76%

Single rainbow

Not even all the way!

9.90%

Crushed

10.03%

Persistent

Check that all doors have been locked for the night

10.38%

Beyond your Range of Hearing

Refuse to Listen

10.52%

In the Vents

Get into the vents

11.76%

Forever Alone

Try to bring the cube with you

12.25%

Curious

Find all the Vitrified door messages

14.33%

System Shutdown

15.92%

Into Darkness