Complex sentence: The reserve is contained by a seawall running for approximately 400m, and has recently been upgraded, with new pathways, stairs, lookout platforms, an upper promenade and the restoration of the war memorial.
Split into simpler sentences: The reserve is contained by a seawall running for approximately 400m. The beachfront reserve has recently been upgraded, with new pathways, stairs, lookout platforms, an upper promenade and the restoration of the war memorial.