Introduction[]
Dark Is Not Evil is an Infinite mode achievement in Run 3. This achievement is found in IM level 186.
Suggested Characters: 
Gameplay[]
If you did not already realize, the green platforms are all outlined by dark tiles, giving you a better idea of where to land. The easiest way to pass this achievement is to do a few high jumps, locate where the dark tiles are, and land on top of that precisely. Knowing this, here are a two different ways you can complete this achievement:
The first one is to land right next to the visible platforms. This is the most efficient way to complete this achievement. Just make sure that you do not accidentally move left or right and hit a visible tile.
The second one is turning up the brightness of your device. This may help you see the difference between the dark tiles and the sky. A tip you can use is that the places you cannot see any stars are where the dark tiles are (because the dark tiles blocking your view of the stars).
In terms of characters, the Runner is pretty good, since she had great maneuverability, letting you have more control on where to land. The Lizard also works, since its high jumps can give you more time to position yourself to the next dark platform. Lastly, the Child has considerably longer to adjust his landing position, and can even jump long distances to platforms at an angle, and choose when to land on them by moving into them.
Trivia[]
This achievement's name seems to be the opposite of Light Is Not Good.