This is a   Speed Doomer's Archive entry 

author:     Mike Toliver <miketol@mtco.com>

game:       Invaders.wad (plus invadgfx.wad for textures), DOOM2 version 1.9

category:   max           
            
level:      Map 06
            
stats:      Kills    121%
            Items    100%
            Secrets  100%   and Time   14:20

Comments:   I really like this wad.  The author uses heretic textures, which I think look very sharp, and the game play on all the maps (there are 6) is fantastic.  A nice finish for this series of maps - fairly short and very violent.