Here is the full list of all 30 Skully trophies - there are 11 bronze, 13 silver, 5 gold and 1 platinum.
Sacrifice yourself to save the world
Defeat Terry & Break the Jar
Throw Skully 60m
Find the super secret Terry Figure
Say Hi to Mom
Have a falling-out with Terry
Find 100% of the collectibles in 4 chapters
Find the super secret Brent Figure
Find the super secret Fiona Figure
Defeat 50 Lava Punks
Find the super secret Wanda Figure
Summon the Vault Form
Capture Wanda
Summon the Swift Form
Find 100% of the collectibles in any chapter
Complete any chapter without dying
Defeat 100 Water Punks
Summon the Strong Form
Stare straight at the Camera
Meet Terry
Obtain all other Trophies
Complete the Tidal Wave Chase without dying
Complete the Volcano Eruption without dying
Complete the Lava Tube Chase without dying
Find 100% of the collectibles in 8 chapters
Complete 5 different chapters without dying
Find 100% of the collectibles in 12 chapters
Find 100% of the collectibles in 15 chapters
Complete 10 different chapters without dying
Find 100% of the collectibles in all chapters