Found this video of a flawless ToO run on this week's map (Cauldron). It's pretty helpful in terms of showing how to successfully approach this map.

Some highlights:

* Use the doors, don't push: You'll see the turning point of many rounds occurs when a team commits to pushing through a doorway into a room currently occupied by the enemy. In most cases, the team that pushes through looses. Successfully baiting the enemy into pushing through the doorways seems to an important key to victory.

There's a great example at the 4 minute mark. Team A is holding the main central room (where capture point B is located during control matches). A grenade comes through the door and takes one of them out. A member of team B gets eager to push the "advantage" and comes racing through the doorway. The 2 remaining players on team A gun him down instantly, then revive their teammate. Now team B is down 2 players to 3, with their fallen teammate trapped in the room being guarded by 3 opponents.

* If you need to push, flank: When it is absolutely necessary to move into room that is occupied by the enemy (such as during the heavy round to secure ammo), don't all go crashing through the same doorway. Every single room on this map has multiple entrances. Use them simultaneously to make it difficult for the enemy to hold you off.

* Stay together: Not right on top of each other, but as close together as possible. The few times the team in the video looses a round, it seems to be because they got too far apart from each other and were cut off from revives.

* The 2v2 Move: This has less to do with this map in particular, and is more just a great maneuver for all PvP gameplay. Go to the 18 minute mark and watch what happens.

-1 player is left standing on each team, and they're both having a standoff (each guarding one of their opponents orbs).
-They eventually loop around each other and both make it to one of their teammates for the revive. Now we have 2v2, and both teams are right next to each other.
- Our POV player rushes the 2 enemies, running straight past the first opponent to get up close to the 2nd. He kills his target, and draws the attention of the other opponent as he runs past, which means his teammate now has a clear shot at his opponent's back. Great example of knowing when to use aggression to provide your teammate with an easy cleanup kill.

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I watched this video earlier today before my own Trials run. One of the big takeaways I saw was how fluidly this guy moved through parts of the map. He had a few quick routes that got him from the middle room and to great flanking angles in no time. I used several of them successfully today. +1 to the tip about flanking through back/side doors. Plus if you do it quick the other team won't realize until too late.

We had one team that seemed to be moving to the flanks (and ticking on the radar), but not pushing, it often disoriented us enough for them to get a jump on us through another sight line.