Attack speed above lvl 8 (when next cost is 16$) is useless: 122hp enemies have enough time to shoot. So maximum score is somewhere around 1600. My calculations give 1634, but by that time there will be swarm...
175 days ago( 1)
Indeed. Not quite 1634, but considerably higher than my original attempt.
I think the total is lower than you calculated because the 2nd attack from the enemy is not at 122x2 HP, but somewhat earlier.
175 days ago( 1)
2nd attack starts to hit at 213HP and that counted. But I thought it can reach triple-hits at (theoretical) 304HP...
174 days ago( 1)
Sometimes a second enemy will come into range before the first enemy is defeated. This causes the tower to target the new enemy, which is really the only glitch in the game.