I opened my first (faulty) Linx 10 with a standard black Dunlop guitar plectrum ran carefully along the bezel & rear casing. There's a set of fastening clips every 40-50mm. The power and volume button plastic rockers are not attached and will come away from the main logic board & rear casing - don't lose them.
Most components are held in-place with anti-static adhesive tape. This includes the battery, GPIO volume controls, radio antenna array, docking connector & cables.
The main logic board has a thermal pad / EMI / RF shield that's adhesive on the component side. This is partially held in-place by two screws that attaches the logic board to the screen.
On the main logic board there are headers for a motor (vibration function) that hasn't been used.
Most components are soldered onto the main logic board (Intel CPU/GPU, Samsung RAM, SK Hynix eMMC 32GB storage, Realtek radio). All these components are BGA soldered to the board - you would not be right in the head to attempt anything other than direct replacement (and then would need a BGA rework station & re-flow oven). There is no way to upgrade the RAM without replacing the entire logic board.