Finished my first Halo Campaign playthrough on Heroic difficulty and it's def a bit harder than the OG. Rebalancing is part of the reason. I played the OG Halo CE a few months ago so that had me surprised a bit. But still very manageable i'd say.
Halo Campaign Evolved Master ChiefALT: Halo Campaign Evolved Master Chiefstatic.klipy.com