Absolute Maniac Omaha play

[Percussion]

I was playing a live game 50$ buy in recently, but they were playing No Limit Omaha (if there is such a thing) And I was completely lost. 2 of the 4 players would raise 4-8 dollars 80% of the hands!! I sat back and couldn't do anything! I was going to sit until I had AA or KK and limp push, but I have no idea how to play these insane games.

What should I be doing? What hands can call a 4$ raise with .25 .50 blinds? Is this why it is a pot limit game?

The only hand I called a raise with was AQKJ ds (should I push this?) ont he button and mucked on the flop that was all unsuited rags.

Any advice?