Player complaints about Waller blocking movement and causing death (when paired with other [[Boss Affixes]] such as [[Arcane Enchanted]] or [[Desecrator]]) were often heard during the first months of Diablo 3. Prompted by these complaints, the developers adjusted the spawning location of the walls to make them (supposedly) not appear on top of players, and not trap players if they did. This bug fix was not entirely successful, and at any rate, players still complained about being trapped by multiple walls cast by [[champions]]. This is a feature, not a bug, according to a blue post by Lylirra in April 2013: <blue>In one situation, you have monsters with the Waller affix spawning walls near a character in a tight formation, or adjacent to one another in a way that may limit where your character can go. This is not a bug. In the other, you have walls being spawned directly on top of a character, which basically makes it unable to move in any direction until it despawns — and this is regardless of where the other walls may have spawned, too. This is a bug, because walls should not spawn on top of characters. ... Also, I feel it’s worth noting that, while it’s currently the intended behavior for monsters with the Waller affix to be able to spawn tightly near a character, that doesn’t mean the functionality is set in stone forever. We’ve seen a lot of great feedback from players on the affix (like giving walls HP or purposefully staggering where the walls spawn) that we’re definitely reviewing. For the purpose of troubleshooting, though, it’s important for us to identify how the affix is supposed to work right now — what behavior is intended vs. what isn’t — and make that distinction as clear as possible for you. Even if you disagree with how the affix is designed, we still want to be able to fix the bug, and understanding what you’re experiencing (normal mechanics vs. bug) is a key part of that. </blue>  ==Waller Escape vs. Character Skills==

While As of v1.08 there is no way to cause the walls to make a wall crumble prematurely(though this is often suggested by players).  Waller is one of the most dangerous boss abilities since not only does it block movement, a few character skills but it blocks many attacks as well. Characters can pass over use melee attacks to hit targets on the Wallsother side of walls, and walls do not block the radius of most attacks or buffs, but most ranged attacks and projectiles are blocked by walls, making them very effective shields against Demon Hunters, and to a lesser extent Wizards and Witch Doctors. ( * Compare to the list of skills that can escape the [[Jailer]] affix, which controls movement, but does not block attacks.)

* [[Leap]] will hop over the walls effortlessly. Other movement skills such as [[Furious Charge]] will not pass through walls.

* None. Neither [[Vault]], [[Smoke Screen]], nor and [[Evasive Fire]] will pass over or through move the Demon Hunter past the walls.

* Though the Monk can generally punch enemies on the other side of walls, only [[Seven Sided Strike]] can be used will reach further than just past a wall to hit targets over wallsenemies. No other Monk skills can move past walls.

The vast majority of Demon Hunter projectile attacks are blocked by walls. Attacks that are stuffed by waller include: [[Hungering Arrow]], [[Entangling Shot]], [[Bola Shot]], [[Grenades]], [[Impale]], [[Rapid Fire]], [[Chakram]], [[Elemental Arrow]], [[Fan of Knives]], [[Spike Trap]], [[Sentry]], [[Strafe]], and [[Multishot]].

All Monk movement skills and dashing attacks, including [[Thunderclap]], [[Dashing Strike]] and [[Tempest Rush]] are blocked by Waller, though many Monk melee attacks (sometimes depending on weapon range) can hit enemies on the other side of a single wall.

* [[Seven-Sided Strike]] can not be used normally against targeted at enemies on across a wall, but those enemies will be hit by the other side strikes of the SSS if it is cast on a wallvalid target.

* Not blocked by walls: [[Corpse Spiders]], [[Firebomb]](The explosion of Firebomb can extend through walls but not the projectile), [[Haunt]], the [[Rain of Toads]] rune effectin[[[Plague of Toads]], [[Grasp of the Dead]], [[Spirit Barrage]], [[Acid Cloud]].