Here is the full list of all 15 Action Henk trophies - there are 13 bronze, 1 silver and 1 gold.
Die 100 times.
Beat Neil's Challenge
Beat Betsy's Challenge
Fall into the lava.
Defeat Kentony's challenge.
Beat Cedar's Challenge.
Beat Kentinator's Challenge.
Beat Action Henk in the City.
Beat all bonus levels
Beat 99% of all players on a level.
Jump over the barrier.
Earn a Bronze medal on all levels.
Earn a Silver medal on all levels.
Earn a Gold medal on all levels.
Earn a Rainbow medal on all levels.