I’ve added my weekly challenges at the bottom so people can compare.
These are so much better than last week’s. I see myself achieving these mostly through normal gameplay. I might have to look up what a Mangler is - not sure I’ve used that yet (one of the Banished bladed weapons I think).
I will stop being so negative on here and try and be more positive 
With the capstone challenge reward being one of the few customisation things people can earn for free I think it was important it was achievable and fun, not a grind - these new challenges do that.
Thank you again.
Normal
Complete Fiesta Matches x2
Capture a Zone x1
Win Fiesta Matches x1
Kill an Enemy Spartan with the Mangler x1
Earn Double Kills in Fiesta x1
Complete a Big Team Battle Match x1
Kill Enemy Spartans with the Battle Rifle x5
Complete a Stockpile Match x1
Heroic
Win Quick Play Matches x3
Complete any PvP Matches x4
Kill Enemy Spartans with a Melee Attack in PvP x10
Complete Fiesta PvP Matches x4
Stop an Enemy Killing Spree in Fiesta PvP x1
Win Fiesta PvP Matches x2
Kill Enemy Spartans in PvP x20
Kill Enemy Spartans with the Mangler in PvP x3
Legendary
Kill Enemy Spartans in PvP x50
Kill Enemy Spartans with a Headshot in PvP x10
Win Any PvP Matches x3
Earn Double Kills in Fiesta PvP x5