Finally managed to get a copy of S.M. Tadkodkar's Goan Christian Marathi Vilapika During the 17th Century.
It contains: the texts of the 3 Paixao's / Vilapika's from the Central Library MS of Thomas Stephens' Khristapurana at Panjim, in Roman script; transliterations by T into Devanagari script; and plenty of front and back matter.
Appendix G is entitle "Texts of the Christi Vilapika" in the Table of Contents. This is misleading: it is really an Index to the Texts of the Christi Vilapika.
I wish a good copy editor had been employed!
The system of transliteration has to be checked.
The printing and the fonts used: again, unfortunately, not the best.
But a great work, a great achievement.
Not much about the authorship of the 3 texts; or perhaps it is there, but there are no clear subtitles to the effect.
The Khristapurana was printed in 1616 and 1649 at Rachol, and in 1654 at the College of St Paul, according to Schurhammer, quoted by Priolkar in The Printing Press in India, quoted at T 112.