Here are the top 100 scorers who played at least one regular game arranged by kills per square root of the number of games.

31.71 Batiskayf
26.78 BaNaT
23.06 wertrew
20.90 JamesEnsor
19.94 AmericanHist0ryX
19.52 Ricardo Tubbs
18.27 ReTurned
17.94 S3Z0
16.71 tajmtoedaj
16.67 NIKOOOOO
16.16 cs13
16.07 fgfx
15.63 Emz811
15.51 cyclopsface
15.29 Havefun45
14.77 Ignis Mortis
14.75 Kurton
14.67 ProxyCheater
14.44 piers plowman
13.95 Lee34
13.63 Insulaner15
13.25 Astronomy
13.22 Negromarto
12.89 mcdougs
12.86 integral
12.84 michl
12.64 Fakia
12.60 OverNow
12.32 Hero Of Time
12.18 Miss Click
11.99 Dude111
11.32 greeen
11.28 NardSausage
11.14 gtoo
11.07 slim p
10.87 pdtkdt
10.77 mrlee
10.49 Black Flag
10.18 Dome93
10.16 toms
10.11 Lalita Lani
9.92 Derek_Trotter
9.78 haegerholm
9.77 peacefrog
9.71 hcdug
9.59 dicebomb
9.53 Taxii89
9.17 sung2323
9.05 jurgen
8.87 Andew
8.73 IFIGENIUS
8.56 generalissimus S
8.48 PND
8.32 Ferrum
8.12 JFK78
8.06 48 Dice only
8.00 avesano
7.96 odoluyurt
7.34 dzyngis
7.26 peter luftig
7.26 spiritshaper
7.23 M3r0w1ng3r
7.15 22-Apr
7.12 MNML
7.01 Hyouka
6.93 DonnieScribbles
6.85 Marlon Castillo
6.69 Glen Carr
6.66 FortSomFan
6.59 domionly
6.46 Bart Lee
6.34 etpicker
6.28 SOCRATES SLB
5.97 Beach_Bum_13
5.94 k?lllll
5.50 Big Blue Dragon
5.47 Hong Kong
5.27 Farles
5.23 bogaz
5.21 Lakers24
5.17 Captain Ramius
5.01 Douglas Cook
4.72 Lauch mit Schlau
4.68 Masta ov Deth
4.63 jaxa1
4.54 mattz1
4.44 pipacs
4.08 ivv
3.96 Louis Cypher
3.94 PureOdyssey
3.92 spman
3.73 LeoTheCat
3.67 GleepGlop
3.18 Grux
3.05 spman2
2.78 AproX
1.95 shhtshhhh
1.71 dainiusg
1.60 Nerd Alert