Portal Stories: Mel achievements

8.53%

Under the Stairs

9.56%

You Shouldn't be Here

9.70%

2056

MAKE IT STOP

9.97%

Single rainbow

Not even all the way!

10.04%

Crushed

10.18%

Persistent

Check that all doors have been locked for the night

10.52%

Beyond your Range of Hearing

Refuse to Listen

10.73%

In the Vents

Get into the vents

11.90%

Forever Alone

Try to bring the cube with you

12.38%

Curious

Find all the Vitrified door messages

14.44%

System Shutdown

16.09%

Into Darkness