VAFS - VaultTec Accelerated Focus System - Manual Criticals AND Bullet Time
⚪ Last updated 2018⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 1.7% endorsement rate — high engagement, a strong quality signal
- 🏆 #161 of 187 Gameplay mods in this game by downloads
📋 About This Mod
I'm not actively developing this anymore. I'll still respond to help requests in the comments periodically. Anyone who wants to is welcome to continue development of this mod (such as MCM support). The script source is posted in the files section.
This scene is using a Legendary Relentless Assault Rifle. Note how the AP drains per shot, but then refills when I use a critical. Also, this character has 175 AP, so the firing cost seems small, but it's actually a bit more than you might think.
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VaultTec Accelerated Focus System
V. A. F. S. is the VaultTec Accelerated Focus System.
It's an alternative way to spend your AP during combat that is more engaging and fun than watching V. A. T. S. cutscenes.
Simply use the Focus Toggler (found in the AID inventory) to accelerate your senses to a superhuman level, slowing your perception of time and allowing you to react faster and more accurately than your enemies. This costs AP over time to maintain, but ALSO costs AP per attack you make, so make your shots count!
The amount the world slows down around you scales with how perceptive you are. Many bonuses that apply to V. A. T. S. now also apply to V. A. F. S. so you don't have to feel like you've wasted any perk points or stats.
Not only can you slow time with V. A. F. S., but you can also use criticals. If you like tactical crit usage you'll love this. You'll now be able to use a critical at any time by using the Use Crit item. Fire immediately after usage to hit your enemies for critical damage! Crits build up in the background with every hit you make, whether inside V. A. T. S., V. A. F. S., or neither. Unleash them when you need that boost in combat.
Mysterious Stranger: The Mysterious Stranger will appear occasionally at the start of V. A. F. S. when the player is in combat. He will engage targets for the duration of V. A. F. S. and then disappear afterwards.
Better Criticals: Works with criticals provided by V. A. F. S.
Critical Banker: Determines the amount of V. A. F. S. criticals you can hold. Each rank is 1 extra, just like vanilla criticals.
Grim Reaper's Sprint: Has a chance to restore your AP on kill during V. A. F. S. now. Rank 3 has a chance to give you a V. A. F. S. critical charge too.
Four Leaf Clover: Chance on any hit during V. A. F. S. to give you an extra crit charge.
Blitz: Now increases movement speed dramatically during V. A. F. S.
Quick Hands Rank 2: Reloading in V. A. F. S. is much faster. Faster than normal reloading even.
Awareness: Humans and creatures will be highlighted in Red/Green/Blue if they are Hostile/Friendly/Dead respectively. This can be toggled on/off in the options holotape.
Sniper Rank 3: While aimin
VAFS replaces V.A.T.S. with a manual critical system that charges in real time, scaling with Luck, and a bullet time slow-motion effect that scales with Perception. It integrates with perks, offering a more active combat alternative for Fallout 4 players. With nearly 3,000 endorsements and 176k downloads, it's a well-established gameplay overhaul.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Huge community trust: 2,947 endorsements and 176k downloads — this mod is battle-tested.
- Replaces clunky V.A.T.S. with a fluid, skill-based critical system that rewards Luck builds.
- Perk integration means it doesn't feel tacked on — it's built to work with your character progression.
⚠️ Cons
- Last updated in 2018 — may have compatibility issues with newer Fallout 4 patches or DLC.
- Bullet time might trivialize combat for some players, especially with high Perception.
For Fallout 4 players who find V.A.T.S. too passive and want a more action-oriented combat feel. If you're a fan of bullet time mechanics from games like Max Payne, this is right up your alley. Skip if you prefer the traditional turn-based V.A.T.S. or want a mod that adds new weapons/quests — this is purely a combat mechanic overhaul.
💡 Beginner Tips
- Since this replaces V.A.T.S., make sure to bind the critical and bullet time keys to comfortable buttons — you'll be using them constantly.
- If you're using other combat mods, check for compatibility patches or load order conflicts, especially with mods that alter perks or Luck.
- Test the Luck and Perception scaling early to see how it feels — you might want to adjust your build to get the most out of the system.
📊 Mod Details
- Game
- Fallout 4 Mods
- Author
- Ashnal
- Version
- 1.6.3
- Downloads
- 176,578
- Endorsements
- 2,947
- Category
- Gameplay
- Created
- 7/2/2016
- Updated
- 9/6/2018
🔧 How to Install Fallout 4 Mods
Download from Nexus.
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Visit the official mod page for specific installation instructions for this mod.
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