Shockingly bad. Forget the 1980s graphics: the whole thing feels and plays like a tech demo. Poor camera, stiff controls, weapons that all feel the same, tragically dull level design, and a mech workshop that takes its inspiration from Excel spreadsheets. It's a wonder From Software survived long enough to make its great RPGs.
First: You can pick from 3 different control setups... BUT you can't have both Strafe AND auto-boost, both are pretty much a requirement to function. My arms randomly are 3 feet below my mech. Graphics randomly glitch the entire screen out. Graphics are dated, and interface is really old looking. Combat is a bit dull.