Here is the full list of all 18 Leaf Blower Man: This Game Blows! achievements.
Beat the campaign
Beat the horde mode
Beat Act 3
Beat campaign in under 15 minutes
Beat campaign without being hit once
Beat campaign without ever skipping an ad
Play the game with all DLCs
Throw every object in the pool
Throw every object onto the subway tracks
Break every TV in the campaign
Gain at least 16,000 points in the campaign
Gain at least 22,000 points in the campaign
Reach level 30 in Horde mode
Beat Horde Mode without your health ever dropping below 50%
Beat Horde Mode without watching any ads for extra rewards
Break every TV in Act 3
Beat Act 3 in Ad-Free mode