other thing is how to unlock the Forza Veloce achievement and Completed all 14 main missions in under eight hours.
This achievement is not that hard to do, you just have to do all 14 missions in under 8 hours. This achievement is very easy solo. It will be easier IF343 adds co-op.
How I did it:
1: Start a new game on easy ( you can use skulls)
2: run through all the missions as fast as your can. Press
a and y to skip cutscenes.
3: Ignore ALL side quests. You can capture FOBs to use as fast travel points but not required.
4: Upgrade the grapple shot to its 3rd upgrade, quickshot (requires 3 spartan cores total) for 40% faster cooldowns.
Note: I did not upgrade anything else as I didnt think it was necessary. If you want to I would recommend putting any you find into shield upgrades. 5: I didnt switch off grapple shot because with quickshot the cooldown is very short.
2 tips with the grapple shot: When you grapple onto something quickly pan your camera away from the object to swing yourself further and faster.
And when you are sprinting and using grapple shot, hold b on default mappings to slide and gain a lot of speed.
Edit: as per some comments. The save file timer is broken. Like other bugs, this may take a while to be fixed
Try to beat my time of 3 hours, 1 minute and 57 seconds