InHalf-Life 2, the game’s most light-heartedEaster egg is hidden under the “What Cat?” achievement that you can unlock. However, unlike most achievements in the game, the “What Cat?” achievement requires you tobreak the mini-teleporter in Dr. Kleiner’s lab. To make things complicated, the game doesn’t tell you about what’s involved in the process of breaking the teleporter and leaves it up to the player to discover it by chance or through trial and error.

Nevertheless, if you’re specifically concerned aboutunlocking all the achievements inHalf-Life 2, you’ll inevitably discover the requirement for the “What Cat?” achievement but not know of a reliable strategy to break the teleporter. If you’ve been stuck trying to overload the mini-teleporter in Dr. Kleiner’s lab for quite some time, this guide should finally provide you with the tips to break the teleporter and earn the associated achievement.

Mini-teleporter in Dr. Kliener’s Lab in Half-Life 2

Locating The Teleporter In Dr. Kleiner’s Lab

In the chapter, “A Red Letter Day,” Gordon Freeman follows Alyx to Dr. Kleiner’s lab and right as you enter the lab, you can find the mini-teleporter on your immediate left. WhileAlyx and Kleinerdiscuss a few things, you can explore this facility and fiddle with the teleporter.

While interacting with the teleporter is not important to progress the story, it does play a significant role if you’re interested in unlocking all the achievements inHalf-Life 2. The teleporter features a button that activates the machine and teleports items between the two platforms. However, to break the teleporter, you must repeat the teleportation process multiple times before the machine gives out and the game rewards you with the “What Cat?” achievement.

Half-Life 2 Tag Page Cover Art

How To Break The Mini-Teleporter In Half-Life 2

To unlock the “What Cat?” achievement, you need to interact with the teleporter and teleport objects between the two platforms. While you’re able to teleport the cactus plant that’s already present on the platform, using bigger objects like boxes speeds up the process. Here are the steps involved in successfully teleporting objects in the mini-teleporter and overloading the machine:

Just as the teleporter overloads,you’ll notice the “What Cat?” achievement pop-up on your screen, and it’s actually a reference to the conversation between Alyx and Kliener that you probably missed while engrossed in breaking the machine.