Here is the full list of all 32 Venture Kid achievements.
Clear the game in under 45 minutes.
Clear the game on hard
Clear the game on normal.
Deal the final hit on Teklov using the shield.
Defeat one of every type of enemy.
Defeat Teklov part II without collecting all the treasures.
Beat the final level of the game.
Defeat the boss without losing energy.
Reach a boss room without defeating any enemies.
Buy 5 different items in the shop.
Beat the eight level of the game.
Find all the secret treasures.
Beat the seventh level of the game.
Use the bottle to refill a weapon.
Use A special item to walk on spikes.
Beat the sixth level of the game.
Reach a boss room without taking damage.
Break 100 blocks.
Defeat a boss with only one heart left.
Beat the fifth level of the game.
Jump over 15 spiders.
Beat the fourth level of the game.
Die 30 times.
Buy something in the shop.
Jump from a frozen enemy.
Beat the third level of the game.
Defeat 200 enemies.
Beat the second level of the game.
Make an enemy defeat another enemy.
Use the boomerang to collect an item.
Defeat a boss in under 30 seconds.
Beat the first level of the game.