Portal Stories: Mel achievements

8.53%

Under the Stairs

9.57%

You Shouldn't be Here

9.70%

2056

MAKE IT STOP

9.98%

Single rainbow

Not even all the way!

10.05%

Crushed

10.12%

Persistent

Check that all doors have been locked for the night

10.53%

Beyond your Range of Hearing

Refuse to Listen

10.74%

In the Vents

Get into the vents

11.91%

Forever Alone

Try to bring the cube with you

12.39%

Curious

Find all the Vitrified door messages

14.45%

System Shutdown

16.10%

Into Darkness