Looking for a PC game

[KW]

Can't remember the name, it was a first person shooter survival I remember playing in 2006-07 or so. Game size was really small for its pretty good graphics & gameplay too, 50-300mb. The survival mode was done by waves, against zombies or monsters (can't remember if it had bosses @ the end of each round)

Main thing I remember is, I think it was a free game, the main & only map was round with grass, with a small collesium like thing in the middle. I think you could pick up perks after killing some enemies

Rep+ if anyone knows

Edit:

Never mind I'll just rep myself, it was called Dead Hunt

[KW]

The rep+ is back in motion. Problem here is I need a working crack to play the game now

[L-Booma]

seriously never heard about this game.