Killing Floor 2 MrAntiFun Trainer +20: Options and Solo Use

MrAntiFun's Killing Floor 2 thread is one of the longest-running trainer listings for the game, opened in April 2015 during KF2's Early Access and updated for years afterwards. This page sums up what the trainer offers, how its builds are organized and how to keep it to single-player. For console commands built into the game see console commands and cheats; for the overall picture of cheating in the series see the cheats overview.

Trainers modify the game's memory from outside. Use them only in offline solo matches. Do not join public or VAC-secured servers with a trainer running, and never use one to spoil other players' games.

Builds: one trainer per game update

A trainer is tied to the exact game build. Every time Tripwire patched KF2, a matching trainer had to be released, so the thread lists a long series of builds dated by game update. The later ones are all +20 trainers and come in two flavours:

Store version	Builds listed (game update dates)
Steam	1-23-23, 3-1-23, 5-4-23, 5-23-23, 5-30-23, 6-14-23, 9-20-23, 10-4-23, 10-11-23, 11-23-23, 1-16-24, 1-30-24
Epic Games	1-23-23, 3-1-23, 5-30-23, 6-14-23, 10-11-23, 11-23-23, 1-16-24, 1-30-24

The current downloads are small WeMod setup files, one for Steam and one for Epic. If your copy of the game has been updated since the newest build, expect options to fail until a new build appears.

The +20 option list

Group	Options
Survival	Unlimited Health, Unlimited Armor
Weapons	Unlimited Ammo, No Reload, No Recoil, Give 9 Grenades
Combat	One-Hit Kills, Freeze Enemies, Trap Enemies Above Player, Mass Kill
Economy and progress	Add 5K Money, Max Level
Utility	Unlimited Flashlight, Slow Motion
Movement	Float Mode, Float Up, Float Down, Save Location, Teleport, Undo Teleport

A few notes on what these mean in KF2 terms:

• Add 5K Money adds dosh, the currency you spend at the trader between waves. See dosh economy.
• Max Level targets perk level. Perk progress is tied to your account, which is exactly why the community warns against using it anywhere but offline.
• Freeze, Trap Enemies Above Player and Mass Kill act on ZEDs currently on the map, which makes them handy for practising boss phases or scouting map layouts.
• Float Mode, Save Location and Teleport turn the trainer into a free-camera tool for exploring maps, finding secret spots or taking screenshots.

Where it started: the 2015 Early Access build

The first release in the thread was a +5 trainer for build V1005 (April 2015) with:

• Infinite Health
• Infinite Armor
• Infinite Ammo / No Reload
• Infinite Money
• Infinite Grenades

Early feedback shaped later versions:

• Players asked for one-hit kills and extra XP options, both of which appear in the later +20 list (One-Hit Kills and Max Level).
• One user reported that the infinite ammo / no reload option left the medic syringe stuck at 30%, so you could not heal yourself. Keep that in mind if self-healing breaks with ammo options on.
• Some users simply reported "not working", which in practice almost always means a mismatch between the trainer build and the game build.

Solo use and ban risk

The advice in the thread is consistent: using a trainer alone, in an offline solo game, carries no reason for a ban; going online with one does. In practice:

1. Start an offline solo match (Solo Offline in the KF2 menu).
2. Launch the trainer and activate options only inside that match.
3. Close the trainer completely before you browse servers or join friends.
4. Remember that perk progress earned with Max Level or one-hit kills is still your account's progress. If you want an untouched profile, do not use progress-related options at all.

For legitimate ways to level faster, see fast perk leveling strategies and best leveling maps.