Gamble With Your Friends Endless Mode: Set It Before Saving
Enable native Endless Mode from an Empty Slot's cogwheel before creating the save, then keep a normal slot if you want the ending and related achievements.
Save rules, explained before you commit
Gamble With Your Friends Guides
Set up native per-save rules without confusing official Endless Mode with old mod advice or losing the normal ending path by mistake.
Start here
Available guides
Choose the problem you need to solve.
Each guide covers one clear task and links back here when you need another route.
Sources