As usual, on offense and particularly when attacking chokepoint heavy maps, you want a flanker to break up the defense and make it much easier for the rest of your team to push through. As such, I strongly recommend a Genji (depending on how his impending nerfs shake out) or Tracer on the first point, and possibly a Reaper. You may even want two, but either, another core DPS like McCree, Soldier, or Pharah (all depending on impending nerfs and new meta) will do well, or possibly a Junkrat or Hanzo (the former for busting up formation; the latter for ranged picks).
Tank-wise, a Reinhardt will be critical to help push through the choke, while D.Va or Winston is probably best to stand alongside him, so as to circumvent it. That said, it's hard to go wrong with the powerhouse that is Zarya (who's useful for punching through thanks to her barriers), or the pick-happy Roadhog.
As for supports, as of now you still want the bomb Lucio – Zenyatta tandem (which have a superior suite of abilities between them, extremely powerful and versatile ultimates, and a lot of damage to offer), but the incoming patch is likely to change that. It's tough to say for sure, but my bets are on Mercy – Zenyatta, for both attack and defense, despite the lack of AOE healing and despite Zenyatta's nerfs (his Discord orb in the PTR is still strong just not stupidly so), although I could see Ana and/or Lucio working their way into attacking compositions as well. Whatever is chosen, it's likely best to stick with it through the entire map.
Past the first point on offense or defense, Reaper is likely best for flanking so as to take advantage of the multiple routes and verticality; your other DPS should probably be Soldier or McCree in order to remain effective in the long, open areas.
Tank-wise on offense or defense here, Reinhardt is great for keeping you covered out in the open while Roadhog is good for picks and to hook people off the map; Zarya would also serve well to provide further protection in the open and for long range DPS with her secondary fire.
Once inside the castle, a Genji or Tracer should be able to exploit the side routes very well on offense, while McCree is probably best to dole out the remaining damage, though Soldier or Pharah could be strong picks too, depending on balance changes and the opposing team composition.
Any tanks should be strong here on offense, while on defense anything but Roadhog -- who tends to fuel enemy ultimates more on defense, giving attackers what they need to roll over their foes -- should work well.
With the launch of Eichenwalde will come two new skins for Reinhardt, each of which are arguably among his best yet.
The first, Balderich, appears to transform him into the former king of the Eichenwalde castle with a glorious golden, blue, and brown scheme, while Greifhardt goes with a green and brown color scheme and covers him in plants and moss.
Both skins can be unlocked through normal loot boxes or purchased with in-game credits.
Blizzard has done well to mix up Overwatch gameplay with the most open, intricate map yet in Eichenwalde. Even better, the map encourages the use of heroes that are somewhat underplayed and/or underpowered right now, such as D.va, Pharah, and Junkrat.
Combined with the aforementioned patch and possibly imminent launch of new hero Sombra (rumored to be a stealth hero), it's a better time than ever to get into the game.
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