Here is the full list of all 32 Their Land achievements.
A clearly handmade bottle from a bygone age. Its bulbous form is covered in scratches, dents and looks overall quite well worn from use. The strap on the side is caked in dirt and looks ready to crumble at the lightest of touches.
Complete The Level Prisoned Without Getting Seen
A cup carved from wood and seemingly sanded down with presumably sand. The upper edge is a tad too slim and almost sharp to be comfortable while also having a number of notches from long time use. The wood itself seems rotten from being left outside for too long while not being coated with any kind of water repellant.
Crocodile Takedown. It's okay - crocodiles want to eat you
First Epic Monster Defeated
Set your first brush on fire to continue your mission: To find your friends and leave this damn island
I hope that didn't hurt the elephant. At least it didn't seem so
What was once a beautiful piece of pottery now lies in shards, caked in mud and dust. Judging from its size and the way it was formed it seems that this vase was once used as a way to either store food or liquids. When taking a closer look, one is able to discern painted scenes of human figures dancing around a great bonfire in celebration.
First Giant Centipede Defeated
A bottle fashioned from a dried gourd with a wooden plug at the top and a cord made from woven vines to make it portable. Its length measures about as long as a forearm and with all the small nicks and discolorations it seems well worn and used.
You will earn this achievement after killing your first wolf. Sadly that's the only way to survive this nightmare.
Finishing Your First 5 Epic Co-op Battles
Conquering Your First 10 Epic Co-op Battles
Participating in Your First 20 Co-op Games
Participating in Your First 50 Co-op Games
Setting Your First Speedrun Record Time
Play The Level Surrounded with Zero Missed Shots
A handmade clay bowl with rather low walls. It is coated in a sheen of black color that seems to crumble away in some places. While neither the most beautiful nor most well made thing it seems to do its job.
A dirty, old piece of wood fashioned to be used as a spoon. Its surface is weathered and worn down by dirt, wind and water as well as being used over and over again, giving the surface a curious texture that is composed of smooth yet rough material.
Jeremy got detected by the Creatures in the level "Dark Forest". Is this a death sentence?
Mastering Creatures Wave 5
Surviving To Wave 10
Reaching Creatures Wave 20
Reaching the Thirtieth Wave Without Hesitation
Conquering Wave 40 and Beyond
Overcoming Wave 50
Slaying 100 Creatures
That's impressing. Decimated 200 Creatures already in Survive-Mode
Smashing your first 400 Enemies in Survive-Mode
Overpowering 700 Creatures in Survive-Mode
Crusading Against 1100 Creatures with Ferocity in Survive-Mode
Dominating the First 1600 Enemies with Unparalleled Skill In Survive-Mode