The Expert Mobility Course in Call of Duty: Modern Warfare 4 is one of those side modes that looks simple until you actually try it. Think of it as a spiritual successor to the F.N.G training course from the original CoD 4 back in 2007, except this one has a cosmetic reward dangling at the finish line and a time requirement that will genuinely test your patience. The reward is the Clockwork Weapon Charm, and getting it means earning an S-Tier ranking by clearing the course in under 56 seconds.
What is the Expert Mobility Course in MW4?
The Mobility Course is a standalone game mode in Modern Warfare 4's beta where you race through an obstacle-filled track, hitting targets, avoiding lasers, and managing fall damage along the way. It's replayable by design, the kind of content you'll run a dozen times trying to shave fractions off your best run. Three performance tiers exist, and only the top tier, S-Tier, unlocks the Clockwork Weapon Charm.
Modern Warfare 4 Guide: How to Beat Expert Mobility Course
How do you unlock the Clockwork Weapon Charm?
The Clockwork Weapon Charm unlocks when you achieve an S-Tier ranking on the Expert Mobility Course. Based on current beta testing, you need to finish in under 56 seconds to hit that tier. A time of 58 seconds has been confirmed as not enough, so the cutoff sits somewhere between 56 and 58 seconds, with sub-56 being the safe target.
The course rewards a combination of speed and accuracy. Raw speed alone won't get you there if you're skipping targets or eating avoidable damage penalties.
What's the fastest route through the Expert Mobility Course?
Your instinct will be to sprint the most obvious path forward. That's the wrong call. The Expert course hides targets off the main track, and some of the fastest routes actually require dropping down a level rather than pushing straight ahead.
Modern Warfare 4 Guide: How to Beat Expert Mobility Course
Here's what separates a sub-56 run from a mediocre one:
- Hit every target you can reach. Targets are scattered across the course, including off the obvious path. The audio cue fires when one pops, but you won't always see it. Stay alert and check side routes.
- Drop down when the path offers it. Counter-intuitively, descending to a lower level sometimes opens a shorter line through the course than staying high.
- Avoid all fall damage. Hard landings cost time and health. Ladder jumps that miss the mark will punish you. Practice the transitions until they're automatic.
- Don't get hit by lasers. You can technically survive one laser hit, but absorbing any penalty is time you won't get back. Treat every laser as a run-ender.
The current record in the beta sits at 42 seconds and 36 milliseconds, achieved by hitting all 40 targets with zero fall damage and zero laser hits. That's the ceiling you're chasing if you want to push beyond the S-Tier threshold.
S-Tier performance breakdown
Here's a quick reference for what each performance category demands based on current beta data:
Tips to shave seconds off your run
After running the course repeatedly, a few patterns emerge that consistently separate faster runs from slower ones:
- Memorize target locations before your serious attempts. Hunting targets mid-run kills your momentum. Know where they are before you start the clock.
- Practice individual sections in isolation. The course has distinct segments. If your ladder section is costing you time, drill that part specifically rather than rerunning the full course every attempt.
- Commit to the drop-down routes. Hesitation at height transitions costs more time than the drop itself. Once you decide to go low, go immediately.
Count your targets. The record run hit all 40. If you're finishing runs at 57 or 58 seconds, you're probably missing targets that would push your score into S-Tier range.
Modern Warfare 4 Guide: How to Beat Expert Mobility Course
What else can you earn in the MW4 beta?
The Clockwork Weapon Charm isn't the only free cosmetic available during the beta period. There are additional rewards tied to beta progression levels and challenge completions. If you're grinding the Mobility Course anyway, it's worth knowing what else is on the table. The full breakdown of every beta reward and how to earn them covers all the unlockables in one place.
For PC players heading into the beta, getting your system's security settings sorted beforehand saves a headache. The TPM 2.0 and Secure Boot setup guide walks through exactly what RICOCHET Anti-Cheat requires before you can launch.
The Expert Mobility Course is genuinely one of the more satisfying optional challenges in an MW4 beta that's already packed with things to do. Sub-56 seconds is a real ask, but it's achievable with a clean route and consistent execution. For more on everything available right now, the full Modern Warfare 4 guides collection has you covered.