Achievements:
Ambient Take optional photo #1 in Episode 4 | Dark Room 10
Balance Take optional photo #3 in Episode 4 | Dark Room 10
Dark Room Finish Episode 4 | Dark Room 55
Dioptic Power Take optional photo #6 in Episode 4 | Dark Room 10
Fisheye Take optional photo #7 in Episode 4 | Dark Room 10
Gamma Value Take optional photo #5 in Episode 4 | Dark Room 10
Manually Exposed Take optional photo #8 in Episode 4 | Dark Room 10
Rangefinder Take optional photo #4 in Episode 4 | Dark Room 10
Shutterbug Take all optional photos in Episode 4 | Dark Room 45
Slideshow Take optional photo #9 in Episode 4 | Dark Room 10
Time-Lapsed Take optional photo #2 in Episode 4 | Dark Room 10
Tripod Take optional photo #10 in Episode 4 | Dark Room 10