It seems the Mediafire links above are useless, as they point to a multipart RAR archive that verifies okay in itself, but contains a
Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe that got corrupted.
I've checked this with
$ md5sum Patch_NA_Europe_Germany_MP_2.0_\(1.0.86.4580\).part?.rar
c215b165f6bdcfe55def1ae3e099159a Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part1.rar
9116397db2a64a9504736368ba4fcfc2 Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part2.rar
59d64ac20a68ebbae6f66a51786fc0fd Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part3.rar
cb56df7a48372306e1f675da3ba585b0 Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part4.rar
fe92cdbdd070bb7eed5a9f6215b10b2c Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part5.rar
e6f51326796770ab370814b458dd041e Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part6.rar
5ec015b883d19e410a2154ce647d9456 Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).part7.rar
and got
$ md5sum 'Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe'
eae661f0d26668aebcc8c8f195fcfb38 Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe
$ unrar t Patch_NA_Europe_Germany_MP_2.0_\(1.0.86.4580\).exe
UNRAR 5.31 freeware Copyright (c) 1993-2016 Alexander Roshal
Testing archive Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe
;The comment below contains SFX script commands
Setup=PatchTool.exe
TempMode
Silent=2
Title=Hellgate London Standalone Patch
Testing PatchTool.exe OK
Testing patch.dat 47%
patch.dat - checksum error
Testing patch.idx OK
Total errors: 1
A
good Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe should end up as
$ md5sum 'Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe'
f19124f9edc68e6aad4aeec661c4acec Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).exe
If necessary, I'll set up another mirror for the MP 2.0 patch here on
hellgateaus.cyou. For the time being, please avoid the Mediafire links above and use the alternate download sources instead.
[EDIT] Done.
$ md5sum 'HGL_Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).zip'
e9ee25ab406591f964cdc1fe407bd0a3 HGL_Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580).zip
Regards, NiteHawk