The in-game description for Gun Fu reads "Do 25% more damage to your second V.A.T.S. target and beyond." However, with the first rank of Gun Fu applied, only the 2nd target receives the increased damage, with all subsequent targets receiving normal damage. With the second rank of Gun Fu applied, only the 2nd and 3rd targets receive increased damage. The issue is fixed after obtaining Gun Fu 3, which applies critical hits to the 4th target and beyond as intended.
Tested with the latest version of UF4P (2.1.5), installed via MO2 on a fresh profile. Here is a steam discussion from 2015 describing the same issue:
https://steamcommunity.com/app/377160/discussions/0/494632506575735621/
Intended behavior:
| Target # | Rank1 | Rank2 | Rank3 |
|----------------|-----------|-----------|-----------|
| 1st Target | 1.00x | 1.00x | 1.00x |
| 2nd Target | 1.25x | 1.25x | 1.25x |
| 3rd Target | 1.25x | 1.50x | 1.50x |
| 4th Target | 1.25x | 1.50x | critical |
| 5th Target | 1.25x | 1.50x | critical |
Actual behavior (only rank 3 works as intended):
| Target # | Rank1 | Rank2 | Rank3 |
|----------------|-----------|-----------|-----------|
| 1st Target | 1.00x | 1.00x | 1.00x |
| 2nd Target | 1.25x | 1.25x | 1.25x |
| 3rd Target | 1.00x | 1.50x | 1.50x |
| 4th Target | 1.00x | 1.00x | critical |
| 5th Target | 1.00x | 1.00x | critical |
Issue Data
Issue #32861: Gun Fu bonus damage is not applied after 2nd/3rd target without rank 3 of the perk.