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