Tired: The hardest part of Infinite's LASO mode is the entire UI (including whatever weapon you're holding) being invisible

Wired: The hardest part of Infinite's LASO mode is the "Boom" skull augmenting all the explosions, so when you're supposed to clear out all the enemies in an outdoor area, you accidentally launch a Brute 15 miles away while they're still alive, Team Rocket style, and The Weapon won't let you push a button to open a door because one of the enemies you were supposed to kill is still alive even though they're now on the other side of the ring

Spire'd: The hardest part of Infinite's LASO mode is that a buddy and I beat it all in co-op, and the only mission that took us over 2 hours ("The Sequence", in which you traverse a large portion of the map activating four spires) did not get marked off in the missions list. Every other mission has the Legendary icon marked in white. But The Sequence is still blue on Legendary! We replayed it without any fast traveling or backing out to the menu, which took 2.5 hours. STILL DIDN'T WORK!

I had a good time embracing the challenge of Infinite's LASO mode, and it really was hard as balls. I wouldn't necessarily recommend it though, playing on Heroic was more enjoyable, and Legendary without all the skulls could potentially be even better. But there were a few too many issues that made our LASO run frustrating at times.

I have completed LASO. I just didn't get the achievement to pop because of a tracking glitch. Booooo.