Hi guys, i have rooted easily this tablet with one software (Oh yeah, one click root).
The proceedings is quick and easy:
1: Download this software: http://products.mgyun.com/api/downjump?id=55
2: Open it (and agree all conditions)
3: Grab your usb cable and connect your tablet at your pc
4: Enable "Debug USB"
5:Now the software will download the info of your device and will recognize the Archos 70 Titanium. At this point will appears a green button, press it and the software will start to install the root. After this process the tablet will restarts and after this you will see a new chinese program in your tablet (obviously it's the root app).
PAY ATTENTION: When you install an app who needs the root, after start it, will appear a message for authorize the root; Remember, for authorize always press the right button.
Ps: Do this at your own risk.
For me worked without problems, i wish will be the same for you!
Pps: Ragazzi, spero che la guida sia comprensibile, scusate se non la traduco (e scusate il mio pessimo inglese!!). Comunque è facilissima da capire! Se avete problemi ci sono!