Tip to get lots of points: use camera strider and choose easy mode and because camera striders shoot has a one second cool and gives 10-60 points (depends on where you hit) and when you reach wave 11 kill all the big toilets then leave one small toilet then switch to engineer camera then heal the orb and switch back to camera strider then at wave 12 (boss wave) just become the strongest titan you have (i use uttvm) and kill all the toilets except the boss toilet then switch to engineer camera again to heal the orb until full health then switch back to camera strider and shoot the boss when the orb gets to 1000 health just switch back to engi and heal it, thats all