Completed my Brutal play through (third play through overall) this morning. For some reason, it felt easier than Hard... Maybe because it's my third time playing it and there were no achievement constraints to hold me back.
Also,
finally got that blasted gold achievement for Lost Viking today as well... I'm not very good at it (just yesterday my highest score was 25,000) so I'm really happy I finally got it.
I'm not interested in online play (I'm probably terrible at it anyways) so I'm pretty much trying to get all the offline achievements while playing some custom/co-op multi-player games.