Jesus Christ, I'm now at one of the new boss encounters ("Swift Platform"), and this is worse than the main game. A quick spoiler-free description:
When you start the encounter, an event starts where several smaller enemies appear after a certain amount of time. You need to fight them, while also having to dodge obstacles. After you kill them, the boss appears (with a big shield), who dodges your throws and who launches debris at you that will do lots of damage.
I died in this phase. And guess what, I got put back to a control point quite a bit away from the boss encounter. I then had to run back, start the event again, wait a few minutes until the boss appeared, ...only to die again. There even is a small cutscene during the encounter, which would have been the perfect time for a checkpoint, but nope, back you go to the control point.
The funny thing is, apparently this was patched a few hours ago, and it was even harder with more damage coming from enemies / failing to dodge obstacles. I bought this game day one with the season pass, but I'm seriously waiting for reviews when their next game hits.