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