The mod has been out since the middle of last year, but received a big version-two update this week. The mod also adds a short tutorial and mini-campaign, new airboat rockets, a button to quickly throw grenades (instead of having to manually swap to them), and a few cheat modes as well.
The mod lets you double-jump, power slide, wall-run, and climb ledges.
The Half-Life 2 Mobility Mod adds a number of movement options to the game that make its gameplay resemble Titanfall 2. Need another reason to play through Half-Life 2? What if it was basically Titanfall 2?