I thought this might be helpful regarding Clock'em
I am not really a dps person.... all of my characters are healers, and I only fumble through a dps build/rotation to quest when I need to. So needless to say, I had a hard time with the tiers of the brawler's guild needed to unlock clock'em
. I know there are other people out there who are solely healers, so I thought I would share what helped me survive.
I was able to get through a few of the very first fights without changing anything. Then about part way through tier 2, when I got to the dps race battles, I failed miserably. So, I reforged my druid's gear to boomkin stats (since trees don't need as much haste as boomkin), re-read a few guides on boomkin rotation (icy-veins), found a "buff group" (if people on your battlegroup are nice enough, everyone in the room groups up to share buffs and food), and bought the battle potions from the vendor right inside the entrance to the guild. I buy 2 for each battle, this way you can pop a potion right when you get into the room, before your opponent attacks, and then once the cooldown wears off.
By doing all this, I was able to get to tier 4 without buying/farming gear I didn't normally carry on me.
P.S. I bought my brawlers guild invite from the BMAH during the holidays when less people were on. I was able to pick it up for around 1.5-2k gold. So if you have a day to spare to sit at the BMAH and keep an eye on it, you should be able to get it fairly cheap.
Good luck getting you're cute, feisty little Clock'em