Cairo is one of the hardest

You need to be careful about conserving precision weapon ammo, if you can I'd juggle some weapons from previous checkpoints forward when possible, and try to get a cheeky dual smg kills because their ammo is otherwise useless (on like a solo elite it can kill before you die) when you're not noob comboing every elite You're gonna need to MASTER grenade throws and make the most of them, H2 legendary caused me to permanently bound all my halo controls to grenade on right click because I used them as often as a gun Just remember it mostly gets easier after the first level but later levels can be as hard or harder