Arena_Sawmill is an Arena map introduced as an official TF2 map in The Sniper vs Spy Update. Two other official maps have since been released based on Sawmill: a King of the Hill version, KOTH_Sawmill, and a Capture the Flag version, CTF_Sawmill.
Your goal is to eliminate the entire enemy team or capture the central capture point when it becomes available.
Locations
Waterfall
The waterfall is on the side of the map that is right out of the RED base. It has logs to cross the water with one of the two heath packs in the level. There is also a hidden path that goes behind the waterfall.
Center Shed
The middle shed is one of the sheds in Sawmill and houses the control point. It has giant unbeatable saws that kill anyone slow, dumb, or just unfortunate enough to get in the way.
Common strategies
Use the rooftops to give yourself the high ground advantage. The tops of the stairs in the central area are also good for picking off enemies down on the main point.
Unlike many Arena maps, in Sawmill, water is present in abundance. Combined with easy access to health pickups, the map encourages tactical retreats in the face of unlikely odds.
Trivia
Thunder occurs every 11 or 12 seconds.
Just like in Lumberyard, there is a spytech missile silo directly under the capture point.