Forgot a wad's name

Help me!! I played a wad about a year ago, and I can't remember what it was, and want to play it again. Basically it was alot of square-ish rooms with weak enemies at first, it was setup like one of those contra base levels almost (but it's not action doom). It had a very energetic soundtrack and the rocket launcher had a custom sound, a high pitched whine as it fired. I know this isn't a very clear description but it's all I can remember right now.