1) fists: 8 punches to kill a caco.... nuff said this is WAY OP from vanilla. its 2x faster and does 2x more damage. its amusing but it could be dialed back a bit.
2) quaking aside (which i personally removed because its annoying), the damage on the normal chainsaw is 2-20, whereas this is 5-15. in general this means it actually does quite a bit more damage, because it boosts its average DPS. example? a cybie takes 20-22 seconds to kill.
http://doomwiki.org/wiki/Chainsaw according to this it takes usually around 40. 2x damage, and is easily the best weapon to use against any monster under hellknight in terms of DPS.
3) pistol is better. its about 2x faster, and it does more damage (semi). honestly i really feel like the burst fire is unnecessary/overpowered, but seeing as the default doom pistol was pretty much useless anyway, who cares? this is a definite improvement for me.
4) the chaingun is EXACTLY the same. except now you cant 2 shot snipe, it takes a little while to start, and theres an unnecessary amount of vertical spread. this is weaker than the original. my suggestion? 3 firing frames instead of 4 (FASTER).
5) Shotgun is slightly weaker due to slightly slower firing rate on average, and the spread goes to high vertical to my liking; nothing like the wide horzontal spread of the classic.
6) SSG is massively nerfed! 7 bullets are missing for realism. 12 gauge 00 buck has 7-10 bullets a shell depending on a number of factors. also, the spread is to vertical and not wide enough once again. consider making shotguns shoot 10 for the pump, 20 for the SSG. that will balance things out significantly. MAYBE 9-18 if you want to nerf the shotgun a tad, which is reasonable. 7 ain't cutting the mustard mate.
7) rockets seem fine to me, though it does fire a tad bit faster than the normal one.
8) plasma is weaker, usually taking more to kill and slower
9) took 7 to bring down a cybie, as opposed to the usual 3-4, but took about as much time to kill. the big thing is... it took more ammo. so this is a definite nerf, because 40 each shot at 2x as much is worse off from 60 in 3-4 shots. its faster, more responsive, but an ammo hog.