I really only play random now, but what is the highest score you have achieved?

So far I have only managed 2500, I dont know if thats good ro not, but there seems a point in the game where you just get killed.

Arctic: 1080
London: 1220
Hawaii: 1292
Space: 1415
Hell: 1141
Jungle: 2224
Random: 1088

2500 is great. My highest score is 1988 on Jungle.