Achieved 20 consecutive hits with the Combo Meter equipped

Craft a workbench with four blocks of wooden planks.

Use planks and sticks to make a hoe.

Smelt an iron ingot.

Attack and destroy a monster.

Use planks and sticks to make a sword.

Punch a tree until the block of wood pops out.

Collected the clear crystals in Chapter 4-2 without being detected by the security robots

Defeated the Chapter 3-5 boss

Open your inventory.

Acquired a Gadget part

Discovered a treasure chest

Defeat the Kraken in the single player Campaign.