I did this Haunted House a while back but figured i would post the link to the restore pics if anyone would like to see them.
Didn't have any other options with this playfield since they wont be made.
Pics here https://www.flickr.com/photos/67565915@N06/sets/72157635391130581/

No water slides all hand painted.

And a lot of time!

I use acrylic paints ,I like to use spray max 2k.
It dries hard and is a 2 part clear.

I use the bottles you get for about a buck each.
They dry flat but when you clear they look nice,and being acrylic the clear doesn't affect them.

The upper PF didn't need very much but he other two are a different story.
The main PF was on my rotisserie for a couple weeks(working a few hours here and there)
All in all i would guess 20-30 hours for all three without clearcoat.
The checkerboard pattern on the main PF and the rock shapes on the lower PF were the worst(time consumer)
They didn't turn out perfect but considdering the condition i started with i was very happy with the result.

Sorry I don't have the machine anymore for reference.

As far as Art goes I'm definitely not an artist but I did spend countless hours in middle school drawing ,something I haven't done in 25 years or so.

If it wasn't for the fact that it takes so long to do these, I would consider doing a few of these for other people.
Now I understand why some of these Playfield restorers charge so much.