Steam allows version rollback via the Steam console or third-party depot downloaders. You can use DepotDownloader to fetch Dungreed version 1.2.8. Once downgraded, your old trainers (including WeMod) will work perfectly.
Warning: This disables cloud saves and online leaderboards, but for purely single-player enjoyment, it’s the best solution.
Given that the Dungreed trainer is patched, you have to ask yourself why you want it.
The developer, TEAM HORAY, has explicitly stated that they do not ban players for cheating in single-player mode. However, they patched the trainer to protect the integrity of the Daily Leaderboards. If you use a mod or bypass, avoid the Daily Dungeon to be respectful to legit players.
Just because trainers are patched doesn’t mean you’re stuck grinding forever. Here are five legitimate alternatives to regain that “god mode” feeling.
Just because the trainer is patched doesn't mean you can't bend the rules. The Dungreed community has found several legitimate (and semi-legitimate) ways to reduce the grind.