The battery door has been removed for clarity, but is not necessary. See this guide for how to remove it.

Unscrew the eight Phillips #00 screws on the back panel:

Two 2.5x6mm screws above the screen.

One 3x6mm screw on the upper part of each side (two total; right side shown).

One 3x7.5mm screw on the lower part of each side (two total).

Two 3x4.5mm screws on the bottom.