I just finished your two recent levels, Night Call and Rock Hard. Both were pretty fun to play, Night Call was really challenging, probably your hardest level yet.
On Rock Hard, I kind of learned that Biker could stab the fat guys, I didn't know this at first, I thought I you could only kill them with knives. Nice to see that they added an animation for stabbing the fat guys with the cleaver. I also liked how you balanced the enemy types, compared to some other levels I've seen where they add too many dogs or fat dudes. I also really liked how you could get big combos, especially on the third floor with everything in the open.
For Night Call, I found it really tough. It took me forever to get past the first floor, because I kept on getting shot before I could run to the enemy. I also liked how it wasn't too hard, so I didn't just keep dying on an inconsistent rate. The other floor with the the group of shotgun people and the fat dude really messed me up, because the chainsaw guy ran at me fast, I also started with a melee weapon so I had to run and switch weapons fast. Really fun though, but I experienced a bug with the table with the military weapons (flamethrower, sniper rifle, SMG) as I couldn't pick up the weapons. Probably was there for decoration but the game said I could pick them up. At the end cut scene I totally though you were going to throw in a Hitman reference, but it was still a cool ending.
As you make more levels I can see you are improving and each level is getting better, keep up the great work