I saw a bit of my friends closed beta but didn't get the chance to try it myself.
Now that I have, and I appreciate it's still beta, I found is very disappointing. Considering what the UE4 engine is capable of, the gameplay is just so bland and limited ideas "I know, let's just throw unlimited enemies at the player when going for an objective!"
Gun/melee feedback is unsatisfying, no explanation on what the powerups are as you unlock them.
I'll keep the pre-order and hope for the best, but it doesn't look good.