Players in comment section, the auto-win, def multiplier, and atk spd multiplier have been removed by the mod likely due to the updating server checks arknights does that catches third party mods like this. Still, the atk modifier still works but like always, it is not recommended to go above x3...
It's probably removed along with the auto-win feature because it gets players banned. Server check: "Hey, how come this kroos survived a patriot phase 2 lance head on and kill it? This player's cheating."
Mod listened and removed mods that gets players banned! Many have been banned from using the instant win feature due to the server check in the game that sees "Hey, how does this player clear a 4-5 minute long stage in just 2 seconds? Probably hacking, ban the account."
To be fair, the high risk ban mods should be removed entirely so people don't lose their accounts; same with putting a cap limit on dmg/def multipliers. Most people who download mods don't really look in forums sadly.
Have you played the new "ICEBREAKER GAMES" with the mods on?
Events with leaderboards or multi-player are actively monitored. Contingency Contracts (CC) and this new icebreaker event being examples.