WASD: Move around
Mouse: Change camera angle
L Mouse or E: Interact with pedestals, finish reading quote
Shift or Space: Toggle Run
Escape: Open pause menu

All the achievements are progress-based and cannot really be missed. Progress is made in Pluviophile by bringing luminescent pink flowers to pedestals on the ground and interacting with them, after which the camera will pan, and a quote will appear on screen.

As of the posting of this guide, Pluviophile has limited profile features, meaning that the following achievements will not show up on any profile showcases or banners until Pluviophile stops having limited profile features, which will happen if enough people buy the game.

You will earn the first achievement by starting chapter 1. This chapter is extremely linear, and the first two pedestals are very easy, requiring only a tiny bit of backtracking. After activating the second pedestal, follow the path until you see a path to the right, take it, grab the flower, and then continue along the straight path. You will quickly unlock chapter 2.

You earn another achievement for starting this chapter. Chapter 2 is relatively linear but does loop around. Walk to the back side of the large rock to grab the flower, and continue straight to place it on the pedestal. Continue straight, grab the flower to the left behind a rock, and follow the path to place it on the next pedestal. Follow the path, grab the flower in the cave to the right, and then follow the path to place it on the next pedestal. Follow the path to get the next flower, drop down to the area with the big rock, and walk across the area to find the next pedestal (you will pass one you already used). Follow the path down to unlock chapter 3.

The third achievement is for starting this chapter. Walk almost straight forward until you reach a narrow spot between some rocks, and continue mostly forward and a bit right to find the first flower. Backtrack to the start of the area to place it on the pedestal, turn around, then walk up the hill to the right, cross the log that appeared over the narrow area between the rocks, and continue straight. Grab the flower from the island to the left and place it on the nearby pedestal. Walk towards the trees covered in Fungi and continue mostly straight until you get to the cabin. Enter it, earn the next achievement, and head outside and to the left. There is a flower and pedestal in a straight line from the cabin. After placing the last flower, take the stairs and walk towards the lady. You will get the final achievement after you return to the main menu.

I hope you have found this guide helpful; please leave a like and a favorite if you did. If anything in the guide is missing or needs updated, leave a comment and I will update the guide. Thanks!