2-Player Shooters for PS2

What are some good 2 player shooters for the PS2. I can never seem to find any so I figured if I had the names of some it would be alot easier. Thanks

if you also enjoy old school sidescrolling action then check out "contra shattered soldier" with a buddy

http://www.gamespot.com/ps2/action/contrashatteredsoldier/index.html?tag=result;title;0

Timesplitters 2, Timesplitters Future Perfect, Conflict Desert StormCommanderShiro

Definately get Timesplitters 2, the co-op is great.

[QUOTE="CommanderShiro"]Timesplitters 2, Timesplitters Future Perfect, Conflict Desert StormChrono66

Definately get Timesplitters 2, the co-op is great.

for 3rd person I will say lego games(star wars,indiana jones,batman) and fallout brotherhood of steel and hunter the reckoning wayward ,the lego games are easy and childish and the other ones is mediocre,but I can't figure out other shooters for ps2

in case of 2d shooters try metal slug anthologies.