A commission for
A fast attack mech that trades survivability in for extreme speed and firepower. Using a powerful reactor it makes up for the lacking armor with a reactive energy shield generator (the large fins in the back), which activate directionally as needed to block incoming fire. The pilot (critical organs) are permanently integrated into the machine.
Mess of weapons:
Shoulder mounted Railgun and Missile launcher
Left arm Minigun, Pile driver, and Plasma repeater
Right arm Plasma cannon and 2 Autocannons
Both hands can also charge up a plasma blast, and of course hand and foot claws are made for ripping up armor.