Dunshan

The official recommendation is to level Bastion (Skill 1) first. Select a teammate and Dunshan dashes over to shelter them, giving the pair a combined 900 shield for 6 seconds. It costs 60 Mana on a 10-second cooldown. While sheltered, your teammate steers both heroes at 95% of the pair's average Movement Speed. Meanwhile, Moving Mountain turns Dunshan's Basic Attacks into ranged attacks that slow by 10% for 0.5s (20% at Level 15). Hold the button to charge them for more range and to aim the direction. Stay on the teammate you're roaming with and keep the slows coming.

Once your team starts moving together in the mid game, use Collision Course to throw enemy heroes toward your side. It charges forward, picks up enemy heroes in front of Dunshan and tosses them behind him, dealing 300 physical damage to nearby targets (600 at Level 6). The cooldown is 10 seconds, 8 at Level 6. On landing, nearby enemies are stunned for 0.5s and enemy heroes take collision damage equal to 5% of their max Health. The charge stops when it hits an enemy hero, so check that no one stands between you and your target. The toss lands behind you, so charge with your team at your back to drop the enemy on their side. Cast during Bastion, it pushes enemies on its path aside instead of tossing them.

At Level 3, Allshield's cooldown drops to 32 seconds, its base damage rises to 340 and the slow reaches 50%. Dunshan gains brief crowd control immunity on cast, so enemy CC can't stop the slam. More extra Health means more passive damage and a bigger Bastion shield. When you're holding your base towers late, cast Bastion on an allied tower. It also works on any tower ruins, turning Dunshan into a turret for 6 seconds. He's untargetable, and he and the tower recover 125 Health per second (250 at Level 6). The tower also gets a 600 shield (1,200 at Level 6). Turret mode has its own 15-second cooldown (12 at Level 6), and recasting ends it early.

Open fights by sheltering the teammate most likely to be focused. The shield totals 900 between the two of you (1,800 at Level 6) and lasts 6 seconds. Your teammate can end it by dismounting or by using a movement skill with very long range. After 3 seconds Dunshan can end it too, refunding up to 50% of the cooldown depending on how long the shelter lasted. Meet divers with Allshield. The slam slows by 25% for 1s (Level 1), then the shield travels forward and launches enemies it touches for 0.5s. It also knocks down projectiles, so aim it across the path of shots heading for your backline.