Here is the full list of all 15 Action Henk trophies - there are 13 bronze, 1 silver and 1 gold.
Beat Betsy's Challenge
Beat Neil's Challenge
Defeat Kentony's challenge.
Beat Cedar's Challenge.
Beat Kentinator's Challenge.
Beat Action Henk in the City.
Beat all bonus levels
Fall into the lava.
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.
Die 100 times.