HR Maps - Powerhouse

Powerhouse is an asymmetrical outdoor map that shows up in all the 4v4 and FFA gametypes.  It hosts Slayer, CTF, Stockpile, Oddball, Headhunter, Crazy King, and Territories.  It has several power weapons, so controlling those will tend to tilt the board in your favor.  These are the things you should know (click for huge):

1. Gravity Hammer - This is on the floor in this little room.  It is the closest power weapon from spawn, and the first that teams go for.  The fastest way there is to loadout with Scout and sprint the whole way.  It helps to have one person for backup, expect company.
2. Grenade Launcher (Pro Pipe) - This is on the floor against the farthest left wall of the downstairs shower.  It is rarely claimed, so cruise by later in the match to grab it for great effect.
3. Rocket Launcher - This is the most popular power weapon on the map, and most teams will send several people to claim it.  Since it only holds 4 rockets, it is spent quickly and will continually respawn, so check back often.  It is leaning against the wall in the water spillway.  The fastest way to get there and back is via jetpack.
4. Focus Rifle (Laser Gun) - Because this map is pretty spread out and has decent sightlines, the Focus Rifle can be used pretty well, even if as supporting fire.  It is on the ground near the stairs.  This should be prioritized below the Hammer and Rockets because a team of two can take down the shooter pretty easily if the other team grabs it.  This pairs well with jetpack on this map as the shooter can hover up high and provide covering fire.