Hi, interesting concept! I've been meaning to play this since the last DD, now I finally have.
First thing first, walking around, hovering your cursor and entering rooms feels pretty cool, I liked that.
I had a bit of a struggle with the gameplay. I'm not good with strategy games or games with complex input, so that probably explains it, but it was exhausing for me to hold right clicking while clicking through so many options. Again, personal bias, take it with a grain of salt.
I felt like in general the only viable strategy to breach a place was to have a guy throw a stun grenade, and then enter yourself and shoot the barricade guys from behind. I don't know why would do anything different, but I couldn't really test that theory since there's only one real level where you have your team.
Also, doors really bothered me, I never knew where they were going to open, how many kicks it would take to break them, or at what exact range I could open them.
Mmm that's pretty much it I think. Here's a video of me playing: