Is there a way to make this game easier or can anyone give me some cheats..

If you are online then yes but otherwise no. There are two spots in Thin Ice, one that will let you fly across the map and go anywhere if you just hold the two buttons. Oaky what you do to fly is, you got to the mansion place where the SEALs start. You should see a ramp with a window at the top. You pull out your secondary(9mm,F90,HK5 etc.) and go to the window. Don't climb in. When you see the word "CLIMB" lay down and back up(while laying down) until "CLIMB" disapears. Then, go forward until "CLIMB" reapears. Stop when it reapears and you should still be laying down. Then, in this order, hold L and press triangle, square, and the HOLD L and triangle or you will fall and kill yourself. When you get to where you want, just let go, but you should know if it's at ground level you will die. Also note that you CAN NOT do this with a rocket launcher(AT-4 or RPG-7) and that there will be people who, that if you do this, they will vote you off, so use good judgement.
Now for the other one. If you go to the front of the barn where the SEALs start at(in front of the piece of wood against the wall) lay down. Look at the floor and you will notice that it is a little off of the ground. Try to crawl under it. You will get it and when you do, remember it, and have fun killing all(just watch out for enemies who know how to do this). If there is an enemy already under the floor, don't use grenades or rockets, because they won't do anything. Just lay down and get them in view and start shooting. It may take a few times to get under, but the best part is, you can shoot rocket launchers under the floor. Have fun killing.

If you need more help, my names are 72ed72idingH00d, _ELITE___SEAL__, or SOCOMSNIP3R84.
Good luck!!!