Here is the full list of all 15 Snakeybus trophies - there are 3 bronze, 1 silver, 10 gold and 1 platinum.
Unlocked School bus.
See you at the top.
Completed first game.
Collect all thropies.
Unlocked Miami map.
Unlocked Ring map.
Unlocked Coriolis map.
Unlocked Endless map.
Found Paris Night map.
Unlocked Party bus.
Unlocked Clustertruck.
Unlocked Dragon bus.
Get 150 segments.
Get 300 segments.
Get 420 segments