Some people are saying it's hard, some saying not so hard. I'm guessing it comes down to difficulty and xcom experience.
Pigeon wrote on Feb 7, 2016, 15:37:
I've played the training mission, I guess they want you to get used to soldiers dying as you're forced to get two killed. It runs a bit slow on the highest settings for me, but I'm still playing long war, so maybe by the time I'm done with that they'll be some drivers/patches that smooth things out a bit.
In xcom 1 training mission, you lost your entire squad except for 1, so that's not a change. Depends on difficulty and mods, and how you want to play in terms of how many will die (talking xcom 1, I've not tried 2).