Ok, here is a solution for archvile endpic.
First I had to reorganize directories, so:
1. Open NeuralUpscale2XForDoom2_v0.9.pk3 - delete decorate.dec, next go to SPRITES directory and delete ARCHVILE directory.
2. Open archvile fix.zip (yes it is made by slade so it has proper extension). Copy decorate.dec to NeuralUpscale2XForDoom2_v0.9.pk3. Copy ARCHVILE directory from SPRITES directory (in archvile fix.zip) to SPRITES directory in NeuralUpscale2XForDoom2_v0.9.pk3. Now copy ARCHVILE directory from HIRES directory (in archvile fix.zip) to HIRES/MONSTERS DOOM2/ directory in NeuralUpscale2XForDoom2_v0.9.pk3.
EDIT: I hope I didn't make new bugs :/
archvile fix .zip