Microbot
12 Achievements
Fullerene
Collect all 20 Bucky Balls
11.9%
How to unlock the Fullerene achievement in Microbot - Definitive Guide
There are a couple of things to bear in mind. First of all, the maps frequently rotate between playthroughs- meaning that you'll have to orientate yourself properly with the videos.
More importantly, THE BUCKYBALL WILL NOT SAVE UNLESS YOU COMPLETE THE LEVEL OR USE AN UPGRADE STATION! It turns out that the last ball I needed was actually one I picked up and immediately quit afterwards. Don't make the same mistake!
You could beat the level first without entering the exit, and then backtrack to find the Bucky Balls. One important thing though, you cannot check which one you have got. So, please track it yourself.
Bucky Ball locations
1-1 last area before the exit
1-2 last area before the exit
1-3 last area before the exit (3 switches)
1-4 after the boss fight on the right side of the room
2-1 last area before the exit (in the small maze)
2-2 follow the first blue arrow on the map
2-3 right before the exit
2-4 small area to the right
3-1 room before last area (there is an "ambush")
3-2 last area before the exit (destroy the red "bubbles")
3-3 last area before the exit (shoot at a switch to open the gate)
3-4 after the boss fight the upper wall opens
4-1 last area before the exit (shoot the switch near the four yellow balls)
4-2 small puzzle before the exit (shoot the lowest one and then use hydro-nuke on the remaining two)
4-3 last area before the exit (shoot the four switches and then the bubble in the center)
4-4 after the boss fight shoot at the switch right before the exit to open a gate on the right side of the boss room
5-1 follow the first blue arrow on the map
5-2 follow the first blue arrow on the map (shot at the switch until the Bucky Ball comes out)
5-3 at the bottom of the first area
5-4 you have to wait until the boss is coming after you - grab the Bucky Ball before you kill him
(credits to Koilenterrorist)