Arena_Manager -> OriginCheck_ImaginaryFriend
This method checks the conditions for the imaginary friend to spawn
you are mainly interested in this bit
```
if (inActivate && (Arena_Manager.currentManager.madeFriend || !Controller_Base.PlayerOne || (Arena_Manager.currentManager.generatedWave != null && (float)Arena_Manager.currentManager.generatedWave.KilledUnits < (float)Arena_Manager.currentManager.generatedWave.TotalUnits * 0.33f) || SwainM.RandomChance(0.25f) || Controller_Base.PlayerOne.myTrauma < Controller_Base.PlayerOne.MyHealth * 0.33f || (!Arena_Manager.OnFinalWave() && Controller_Base.PlayerOne.MyCorpusTrack.Length > 1 && Health_Manager.ReturnActiveCorpusIndex(Controller_Base.PlayerOne) == Controller_Base.PlayerOne.MyCorpusTrack.Length - 1)))
```
The conditions are as followed if I recall correctly
1. 33% of the wave mustve been killed (or 67%)
2. At a chance of 25% when an enemy squad spawns
3. The player corpus must be damaged by at least 33% (or 67%)
4. The player must be on his last corpus
5. The player must be on the last wave