Read letter;
Pick Axe;
Chop tree;
Pick tree;
Place it at the right of the island;

You got "First Steps"





Talk to purple guy (Clarence);
Go back, make the capybara (the big rodant that was living in the tree) run to the right until it breaks the TV;
Talk to Clarance;
Got inside the cave;
Read letter to the left;
Get Jar;
Get big statue;
Go outside;
Place statue by the left side of the cave entrance;
Pursue the capybara again, make it enters the cave. The statue and your presence will force her to enter the cave;
Go back to first island;
With the jar selected, wait until a fly aproaches you and use the jar;
Get jar with a fly and give it to Clarence;
Go with him inside the cave;
Pursue the capybara once again, she should go for the third plate in the right of the floor, Clarence in the middle and you should step onto the first;
Follow Clarence back outside and talk to him;

You got "Not-So-Fruitful Feud"





Go outside, see fruit battle with Clarence;
Push the banana castle all the way to the right until it falls off of the island;
After cutscene, enter the aplle's red castle;
Pick the big fan;
Enter the cave, place fan on second plate; (first will have two aplles);
Pursue capybara until she steps onto rightmost plate;
You should step onto third plate;

You got "Satisfaction"





Pull the lever;
Pick the first gold coin;
Exit the cave and go all the way to the left and talk to Clarence. Sit on the bench for 10 minutes to get the achievement;
When you cross the tree bridge, an apple will fall and reward you with another achievement;

You got "The Law Of Gravity"





You got "True Peace Of Mind"





Get back inside the cave;
Pick big fan;
Exit the cave;
Go outside and all the way left again;
Place the big fan at the left side of the first island;
Interact with the ballon and get a second gold coin;

You got "Party Popper"





Go back to aplle's red castle;
Pick melon;
Go back to the cave on second island;
Give melon to capybara;

You got "Nobody Hates Melons"





Go along capybara to aplle's red castle;
You can now pull the lever behind the throne;

You got "A Place To Rest... Maybe..."





Enter the building;
After the cutscene, pick the thir gold coin;
Read the letter;
Sit and talk to clarence until he stops talking (you have to sit and get up several times);
He will give you the fly in a jar back;
He will also give you permission to have his old chair;
Go right inside the building;
Check gray guy;
Pick cable;
Try to hit the slot machine with your axe;

You got "Vandalism"






Use all three coins in the slot machine;
Get key;
Go outside;
Use fly in the jar outside;

You got "Free Sam"





Get back inside;
Use key on door to the left;
Enter, read letter, push lever;
Go out though the door;
Check the others;

You got "WHAT ON EARTH IS GOING ON?!?!?!"





Go out of the building;
All the way right, there is another letter to read;
Back left one island, use cable on generator;
Press R

Press T for first ending

You got "You Are An Ambitious Person"

Exact as the first one, but does not matter if you have saved you not, after finishing the game you must play from the beggining.

This time, play until you get to the fruit island the very same way, but push the aplle's red castle all the way left to make it fall of the island.

After cutscene, go back inside cave and pick the big jar;
Enter the banana's castle;
Aproach the fountain with the jar;

You got "Banana-Flavored Water"





With the jar filled, go back to the cave, place jar on second plate; (first will have two aplles);
Pursue capybara until she steps onto rightmost plate;
You should step onto third plate;
Pull the lever;
Pick the first gold coin;
Pick big fan;
Exit the cave;
Go outside and all the way left, talk to clarence, place the big fan at the left side of the first island;
Interact with the ballon and get a second gold coin;
Go back to banana's castle;
Pick melon;
Go back to the cave on second island;
Give melon to capybara;
Go along capybara to aplle's red castle;
You can now pull the lever behind the throne;
Enter the building;
After the cutscene, pick the third gold coin;
Read the letter;
Sit and talk to clarence until he stops talking (you have to sit and get up several times);
He will give you the fly in a jar back;
He will also give you permission to have his old chair;
Go right inside the building;
Check gray guy;
Pick cable;
Use all three coins in the slot machine;
Get key;
Use key on door to the left;
Enter, read letter, push lever;
Go out though the door;
Check the others;
Go out of the building;
All the way right, there is another letter to read;
Back left one island, use cable on generator;
Press R

Press R for second ending

You got "You Are A Good Person"

To get the discord achievement, just press the discord button on main menu.

Thanks for reading! If you notice any mistake, please tell me in the comments.

Special thanks to RevengeFromMars for pointing missing steps!