Very nice
A good, solid set of metal riffs. But you'll want to invest in better mics, they can make ALL the difference. Also, record each instrument seperately and put them together. This can be achieved with a program like Cakewalk. But you'll also need an outboard mixer.
When I first started my band, I thought this was too much. But it can really take you from shitty garage band to pro-level audio with only about $500 worth of equipment (if you know where to look)
Plus, everyone loves vocals. Get a vocalist.
But you are certainly on your way.