You will get ‘Vent All The Psychoseisometers For Gisu‘ optional mission by talking to Gisu. You will find Gisu in the Treehouse in Motherlobe Quarry. Treehouse is marked as ‘2’ on the Quarry map (see the picture below). Talk to Gisu to start the quest. In the quest, you will be tasked to vent the bad energy for the Psychoseismometers. Completing the quest unlocks the ‘Good Vibes Only’ trophy. This article shows the location of all the three Psychoseismometer, how to reach there and how to vent them.
#1 Vent Psychoseismometer O99
Vent Psychoseismometer 099 is inside a cave in the Abandoned Mine (Marked as ‘G’ on the map) in Motherlobe Quarry. While on your way to the ‘Questionable Area’, through the abandoned mine, you will find a cave entrance on the right mountain wall at the location as shown in the picture below. On the entrance of the cave, you can see a small board with ‘Blastcap Becky Cave’ written on it. The entrance will be blocked with a spider web. Burn it using pyrokinesis and enter the cave.
After entering the cave, go left. A little ahead you will find a small waterfall. Climb on the vines on the wall of the waterfall, then swing on sticks sticking out from the waterfall to jump on the vines on the other side. Climb this vine to reach the top of the waterfall. here you will find Psychoseismometer 099 on the right corner. On interacting with it you will enter its’ mind. Defeat the enemies inside the mind to vent Psychoseismometer O99.
Vent Psychoseismometer Q33
This one is in the Questionable area. Go to the campfire in the Forgetful forest. In this region, you will find a pole leading to a platform on the tree as shown in the picture below. Climb the pole and then jump to the platform. On one side of the platform, use the branches to jump to the platform on the other side as shown in the picture below.
On this platform, you will find a bouncy plant (marked and 1 in the picture below). Jump on the plant to reach the platform on the opposite side. On this platform, there are two more bouncy plants (marked as 2 & 3 in the picture below). Jumping on ‘Plant ‘2’ will throw you to plant ‘3’ and it will throw you to a platform at the upper levels.
In front of this platform, you will see a wind tunnel. Jump on the wind tunnel and it will lead you to the platform with Psychoseismometer Q33. On interacting with it you will enter its’ mind. Defeat the enemies inside the mind to vent Psychoseismometer Q99.
Vent Psychoseismometer H18
This Psychoseismometer is also in the Questionable Area. It is inside a secret cave behind the trees on the right side of the campgrounds as shown in the picture below. On going behind the trees, you will see a cave, with its entrance blocked by stones. Break the stones to go inside the cave and find Psychoseismometer H18. On interacting with it you will enter its’ mind. Defeat the enemies inside the mind to vent Psychoseismometer H18.
Once you have Vented the Psychoseismometer, go back to Gisu to complete the quest. This will unlock the ‘Good Vibes Only’ trophy.