From Team Fortress Wiki

Voice Responses are contextually triggered lines that play after the player has achieved something, for instance killing a certain amount of enemies with a Primary or Melee Weapon, or the player has triggered something, like being set on fire. The Soldier has several vocal responses, all of which are listed below (excluding Voice Commands).

Taunt-related responses

All voice lines associated with a player-initiated taunt are located in the Soldier taunts page along with a description of the animation.

Kill-related responses

Domination related responses

Event-related responses

Weapon-related responses

Objective-related responses

Contract-related responses

Setup

Outcomes

Setup/Between Waves

During a Wave

After a Wave

During battle with Merasmus

Miscellaneous

Collected Normal Spell (Missing content)

Item-related responses

These responses override the default responses for that category.

These responses override the default responses for that category.

These responses override the default responses for that category.

These responses override the default responses for that category.

These responses override the default responses for that category.

These responses override the default responses for that category.