Pull 20 enemies over when hanging from a ledge

Defeat enemies with a stealth attack, melee attack, headshot, and explosives, in that order, in 15 seconds

Defeat 50 enemies from-the-hip or blind-firing

Perform 10 combo buddy takedowns

Stealth take-down 30 enemies

Defeat 10 enemies in 60 seconds with the China Lake Grenade Launcher

Defeat 4 enemies with the same explosion (all explosive items and weapons apply)

Play in the ocean near the sunken ship

Play with the lemur in the market and let it steal your apple

Attack and destroy a monster.

Use planks and sticks to make a hoe.

Smelt an iron ingot.

Construct a furnace out of eight cobblestone blocks.