Portal Stories: Mel achievements

8.41%

Under the Stairs

9.47%

You Shouldn't be Here

9.61%

2056

MAKE IT STOP

9.75%

Single rainbow

Not even all the way!

9.96%

Crushed

10.04%

Persistent

Check that all doors have been locked for the night

10.39%

Beyond your Range of Hearing

Refuse to Listen

10.67%

In the Vents

Get into the vents

11.80%

Forever Alone

Try to bring the cube with you

12.30%

Curious

Find all the Vitrified door messages

14.42%

System Shutdown

15.97%

Into Darkness