Cuboid
24 Achievements
8-10h
Speed Master
Complete 20 levels with lightning speed
7.2%
How to unlock the Speed Master achievement in Cuboid - Definitive Guide
Complete 20 levels with the lightning speed medal. It doesn't matter if done on Beginner of Expert mode. Just find the fastest route to the end and restart the level, this time going as fast as possible. Another way to do this is, as soon as you get to the end, press the PS button as it will stop the timer, but load the finishing screen. If you do not press the PS button, the time it takes to load the final screen is counted as well, making it nearly impossible to get the lightning speed medal. You will know that you have gotten a lightning medal if you see a gold medal with the "lightning" description nest to it. Here is a link to videos of the fastest route on each level (not including professional levels): YouTube - Broadcast Yourself.
In general, the first 10 levels are easy to complete with lightning speed. The remaining 10 go through the ones you like best.