Scratch

If you've ever played it, it's really fun, isn't it? Discuss tactics for this game here. My favorite is to split your guys into two groups and move them up the side of the screen in a line, starting with an officer and a special ops for both teams, and then you can get more soldiers to join each team so the teams are both equal. Also make sure before the 15th wave to have two medics trailing behind each team. Move the team up in a line on the side of the screen up the map to get to a new part, and that gives you lots of tactical points and XP. It also makes a fresh new wave of soldiers. After  a while of that there'll be like 10 troops in each team. Then you can move up one more time then set your defenses on the next area. The points it gives you will allow you to hire more gunners at the back. I get highscores for this game all the time (My highest score ever is on the all time part of the highscores!), using this strategy. Once again, discuss tactics for this game here (Remember, only for mud and blood 2.6).