The Ballad Of The Twins quest in NieR Replicant requires you to find some tails. This guide on Where To Find Mouse Tails & Lizard Tails In NieR Replicant Ver1.22 will direct you to the correct locations to find both the Lizard Tails and the Mouse Tails, so you can complete the quest and move on.
This one can be quite tricky as there are not many spawns for either Mice or Lizards. The trick is to find a specific spot and then leaving the area, loading back in, and heading back to the same area where the lizard or mice would spawn and grabbing it again. It’s a time consuming process but it’s much quicker than searching the entire map looking for multiple spawns.
Where To Lizard Tails In NieR Replicant Ver1.22
You can find Lizards running around these areas. They are very small, hard to see, and will flee as soon as you approach. They do seem quite rare, sometimes they respawn when you return to the area, other times they don’t appear to return. It took me a while of going backwards and forwards to find enough lizard tails to complete the quest but so far, these are the only locations I’ve seen them appear. Just run up to them and grab them before they escape.
There are also lizards on the Eastern Road, which is a much smaller area. You can run in, grab a lizard, and then leave the area to load back in.
Where To Mouse Tails In NieR Replicant Ver1.22
Head to the Junk Heap and follow the path through. You should find two or three before you reach the end. When you reach the end you load into a new area inside the Junk Heap. Load into the new area and then immediately leave, returning to the Junk Heap. Run forward towards the track and you will find a Mouse. You can repeat this step until you have enough to complete the quest.