River Cross is divided into four segments. Players can't leave their starting 'island' without leaving foot steps in the water and giving their position away (Iris can dash and not leave foot steps but will also be visible).
You won't be able to hide for long in this map as the periodic lightening will give your position away.
Take care not to stand where you can be shot from more than two directions.
The corners of the rivers are relatively safe places to stand near the action.