Disabling Easy Anti-Cheat (EAC) in Armored Core VI Fires Of Rubicon is a crucial step if you want to play with cheats or mods; otherwise, the game will freeze or crash upon startup. Note that disabling the anti-cheat will prevent you from playing in online mode. There are several ways to play Armored Core VI Fires Of Rubicon with mods and cheats:

1. Switch to offline mode by disconnecting from the internet or enabling offline mode in Steam;
2. Disable the anti-cheat, which will essentially put you in offline mode.

How to Disable EAC in Armored Core VI Fires Of Rubicon:

1. Open the root folder of the game (in Steam, right-click on the game title, choose "Properties," then "Local Files," and "Browse Local Files";
2. Locate the file start_protected_game.exe;
3. Rename this file to anything you like;
4. In the same folder, find the file armoredcore6.exe;
5. Make a copy of this file;
6. Rename it to start_protected_game.exe;
7. Now, in essence, we have 2 files named armoredcore6.exe - one original and the other named start_protected_game.exe. One of them launches the game in offline mode with the anti-cheat disabled, the other launches the game in normal mode (but while mods are active, it's better not to launch this one).