Pengy

Legendary Skial King
This map has an easily exploitable glitch that soldiers, pyros, and Hale can all exploit. There's a window in one corner of the map (screenshots below) which can be jumped through using the Mega Flare Gun, and Rocket Launcher, or Hale's super jump. The players can then fall outside the map and onto an invisible platform from which they can shoot/punch through the actual ground. (Hale can also get under and punch people's feet).
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This along with Wep Depot are pretty bad... I managed to evade Hale for at least 3 minutes by running around with the Baby Faces Blaster...