Follow the indicated steps to earn the corresponding Steam achievement. To view your achievement progress and stats, open the Steam client, select "Community", then search for the game hub for "Commander Keen: Keen Dreams". Click the "View Stats" option in the drop down list, then select the option that displays the achievements for your account.

Achievement	How to unlock
Ace at Apple Acres	Complete Apple Acres with the highest possible score.
Best at Bridge Bottoms	Get the maximum possible score at Bridge Bottoms
Boss of Brussel Sprouts Bay	Compete Brussel Sprouts Bay with the highest possible score.
Champion of Castle Tuberia	Complete Castle Tuberia with the highest possible score
Da Bomb!	Collect all 24 Boobus Bombs
Great at Grape Grove	Complete Grape Grove with the highest possible score.
King of Horseradish Hill	Get the maximum possible score on Horseradish Hill
Master of the Melon Mines	Get the maximum possible score in the Melon Mines
Normal	Complete the game on "Normal" difficulty.
Old School	Complete an entire game in CGA mode.
Perfect at Parsnip Pass	Get the maximum possible score at Parsnip Pass
Rhubarb Rapids Royalty	Get the maximum possible score at Bridge Bottoms
Superb at Spud City	Get the maximum possible score in Spud City
Superlative at Squash Swamp	Complete Squash Swamp with the highest possible score.
Takin' it Easy	Complete the game on "Easy" difficulty.
The Hard Way	Complete the game on "Hard" difficulty.