Zusa tunina atiuθ arvasa aφanuva-θi, masuve-mThe translation is amenable to change. However, if I'm not mistaken, the text is detailing a series of fascinating Etruscan rites used toward someone's burial service. The sequence is expected: a burial procession, a presentation of holy offering, a cremation of deceased and offering, then the final entombment of the urn containing the ashes. Somewhere in all of that we also expect a burial banquet, a kind of "last supper" with the dear departed.
The cleansed wrapped body is lifted among the families, then before the tomb.
Maniχiur ala alχuvai, sera Turannuve.
The ancestors lie with the laid, and they remain with Turaniu.
In Elusisnial, θui uria-θi.
They are of the Elysium, united in bliss.
Litil-ta lipile-ka Turanuve.
The sacrifice and this libation is with Turaniu.
Ec mimari.
They shall remember.
Matesi, ara Turanuve Velusinase χeθai.
On behalf of the gathering, (he) is raised before Turaniu of Volsinii with fish.
Ara ina asi.
He is raised by them through burning.
Ikan ziχ akarai.
This text shall be done.
To tackle the phrase zusa tunina atiuθ, I first assume that zusa (if properly parsed) refers to the physical 'body' of the deceased. It's interesting then to note that the Latin word tunica has an unknown etymology but is thought to be Etruscan. I wonder. Is it from a form such as *tunaχ 'wrapping, cloth'? Assuming then a native underlying verb root tun- 'to wrap', tunina could reasonably be interpreted then as an adjective in -na conveying 'wrapped'. Analysis of atiuθ points to an intransitive participle of aθ which I've so far attributed a transitive meaning to: 'to clean'. To be grammatically consistent, I'll have to ammend slightly to 'to be clean'. The text in the Tabula Capuana gives the sequence ita eθ aθene which could mean "that herein was made clean." The verb arvasa should be a passive derivative in -va of ar 'to lift, to raise'. It all seems to fit together coherently, if I do say so myself.
The sequence elusisnial is hard to miss and its connection with the Elysium (Ἠλύσιον), the Greek conception of the afterlife, is rather tempting considering the other burial keywords of this text. This would suggest that Elusisna was the corresponding Etruscan term for their City of the Dead. Elusisnial is its type-II genitive form.
The pronoun form ina is also interesting and I've already noted ana from TLE 27. They must be oblique forms (ie. non-nomino-accusative forms) for the third person. The use of ina for human plural agents could mean, as I've predicted for a while, that third person pronouns have a quirk such that plural 'they' was conveyed by the same pronoun as the inanimate 'it'. This isn't too far from the situation in English where our three singular choices of 'he', 'she' and 'it' collapse to the undifferentiated plural 'they'. One would need only further contemplate the result of collapsing 'it' and 'they' together and one would understand the Etruscan situation as I've suggested it.
What I still don't understand though is how I'm supposed to interpret Turaniu. In the name we have the diminutive suffix -iu and it simply means "Little Turan". The name's use on one mirror to label a cupid-like deity described as an Etruscan version of the divine boy Eros doesn't help me understand the emergence of this deity in this context. However it makes me start thinking instead of the significance of the neighbouring Kore cult of the Greeks. Kore means 'little girl' or 'maiden' in Greek and is the byname of Persephone who, among other things, was the lady of the dead, wife of none other than Hades. It makes sense if Turaniu here is functioning as a deity of rebirth and the immortal soul. A child-like deity would fit the image of eternal youth.