Credits for this demo:

Map reworks, fixes, coding and other stuff by Leo(T.C.K.)
Additional coding, help and suggestions by de_zeurkous
Additional code also by Zora (borrowed her clonespawnpoint and triggeredmonsterdeath), Draco Nihil (translator removal "hax" for E1L2A, sound fix), Waffnuffly (ambient sound stuff), Qtit (the E1L2D scripts for Fay cutscene, originally from his ISV Dragonfly project)

Additional code and help by Daewon (XMesh - this stuff is cool, allows non disapearing mesh actors at any view)

Most of new translator messages writing and testing by Delacroix.
New story improvements, testing and support by Marten (TDG).

New skins by papercoffee (Female2PSX Iris and "Hunter", a discarded originally to be Fay version, Female1PSX Fay).

Additional skin and texture work by Master_Unreal (Hari's skin, upb-glass, scoutship crash skin, misc, etc)
DieHard for UPB-Skybox, UPB-Elya reworks and a helpful tutorial.

Proto pawn conversions/reworks and psx quadshot new mesh/code by MasterUnreal. 
- archangel/littleman skin remade almost from scratch based on screenshots, applied on an early discarded bigman mesh file by Epic, possibly the first version ever of brute, plus UV remapped model of retail krall to fit the skin from the 97 test demo.
- minotaur mesh animated completely, minotaur skin made completely new, using partially various sources like Daikatana (its own discarded minotaur plus labmonkey skin), because of lack of skin or screenshot reference for the original Unreal minotaur.
update:
- additional fixes/conversions by AlCapowned, because Master Unreal discontinued his work
- merged with his EarlyKrall file as well, UPSXMon2
- additional replacement pawns and code fixes by me (Leo), because of the reasons above

QuadShot - extracted with unused anims by Gizzy originally, to be worked on, then used masterunreal's version, with code and behavior modified to the needs of the UPSXQuadshot.
Currently using the original mesh and not MU's reanimation with automag hand because it hasn't been fixed yet(and won't be for the release but it was released separately). 

Additional SkaarjTrooper skins by Draco Nihil (virusskaarj based on realctf skin).

Additional skin by Turboman (his beta-woman remake skin), included now in Female1PSX.

Casey for the WOT BSP conversion method (used for E1L1a). PCube and .:..: for final NPScript fix.

Testing by Draco Nihil, Delacroix, UBerserker, Gizzy and several other who joined my test server as well or hosted their own testing (Artifex). 

Special thanks to UBerserker, Commander Coffee, Lightning Hunter, PCube, Gizzy, Kajgue (his alternate en00 resize too) for additional support. 

Original map authors used for this demo:
Nathan Silvers(E1L1a,b,c, E1L3A, E1L4A, E1L4B), Eric C. Reuter(E1L2(a,b,c,d), E1L3B (part of the map after the first portal, used with John Anderson's tech demo map rework), E1L4A), Jeff Rubin(E1L3B, E1L3C), Max Moswitzer(synreal end part for E1L3B).

Original textures by: Ilya Isaykin, Jeff Rubin, Terry Greer, Mike Leatham ("real" Crypt2, not used yet but plays a big part later and took a long time to recover/edit this).

Original code by: Nick Pelling

Special thanks: James Hamer-Morton, Boris Batkin, Ilya Isaykin, Matthew Kagle, Eric C. Reuter, Terry Greer, Jeff Rubin, Nathan Silvers, Jason VandenBerghe, Jason Watkins, Nick Pelling (for original Unreal PSX concept and leading the team), Cyberlore team and anyone that I've forgotten about. 

And of course the Epic team for the original game/beta content.

Ion Storm for additional sounds/material used for creation of the new monsters.

Thanks, without these people, all of this wouldn't have been possible. 
