To lock on Dead in Valve's game Deadlock, follow these steps:

Activate Deadlock Mode: Use the right mouse button (or the aim button on the controller) to enter Deadlock mode.
Select Target: Move the mouse or the joystick to choose the enemy you want to Deadlock.
Lock onto Target: Follow the enemy with aim untill the locked enemy is deadlocked.
Confirm Kill: After locking onto the target, keep shooting until the target is locked with the dead.

要在 Valve 游戏《Deadlock》中锁定目标，可以按照以下步骤进行操作：

开启瞄准模式：使用鼠标右键（或手柄上的瞄准按钮）开启瞄准模式。
选择目标：移动鼠标或手柄摇杆来选择你想锁定的敌人。
锁定目标：按下锁定键（可能是Tab键或指定的按键），系统将自动跟踪并锁定该敌人。
确认击杀：在锁定目标后，继续射击直到目标被击杀。