Flashing Nougat failed (partition table error), fast bootloop
Wait, you tried flashing the factory images for the Pixel XL (codename Marlin) to an Acer Iconia tablet?!  Yeah, you cannot do that, you can't just flash any firmware to any device, this doesn't work that way.

You would need Acer to release their firmware for your tablet, the firmware you flashed is for the Pixel XL and is only meant for the Pixel XL.  You may have bricked your tablet doing this.  You maybe need to figure out/find your factory firmware for this (from Acer), and figure out how (...if?) it can be reloaded.