Hello, i tested it for a few rounds and thats my first impression so far on whats there:
Its solid, but the last 2 rounds are pretty hard since they swarm you from all sides and you don't get room to breathe.
The Sniper is really good early when there are only the big ones
The Scatter is great for the small ones
I didn't like using the Pulse, not enough room for that in my opinion. Sniper one shots and Scatter kills the small ones really well.
The switching Weapon with Q/E works, but it does not work with 1-3
Also the small ones are pretty op :D