Got around to beating level two. In general I liked the level design (arcade in level 1 is a nice touch), but the second level is definitely seems to be more fleshed out (no pun intended). The meathook in the beginning was neat little detail, the environmental hazards are shown well with the dead enemies, and the small touches around (like the toilet as the office chair) were charming. The only issues I found is that there's a weird lightmap pixelation in one of the upper corners at the secret room where you find the machine gun in level 1, and the moving sawblade that's on the table on level 2 can only be seen from one side.
I generally had less issue with ammo resource on the second level too, not sure if it's due to starting with more weapons or pickups being more generous in general. And if I can offer you a tip: to deal with the screen shaking in the elevator, you can try parenting the player temporarily under the elevator (or manipulating it's velocityto match the elevator's).