Checked by myself
The game as well as the mod works just fine. When I enable "increase damage" I one shot every enemy at the first beach. When I disable "increase damage" I need 2-3 shots for one of them.
Proof:
Emulator, LDPlayer 9 Version 9.1.39.0(64), Android 9.0, rooted & patched with Magisk: Without "Increase damage"