I am very nearly done with this on Heroic, which is the right balance of being a challenge and most importantly, fun!|
... however, what I do noticed on my second play-through, the tougher difficulty actually makes some levels/missions more enjoyable; Requiem, Reclaimer and Composer are brilliant.
On the other hand, playing on Heroic really shows the games limited scope. The few times you can fly around in a banshee is without question truly poor. The actual space to fly around in is so small and limited; hitting the invisible ceiling within four or five seconds upon taking of is rubbish.
Other areas can be a bit dull in which the 30-seconds-of-fun goes out of the window. Too many crawlers and watchers in the latter stages of the game makes it sigh-including along with the cheap one-hit-kill teleporting knights.
The ghost thingummy at the end of level three is horrendous and the last area on the final mission lacks any kind of imagination from the developers; three similar looking tiered platforms is exciting, not!
Loving Spartan Ops (matchmaking) on Legendary though ...
... : )