to defeat Alexander its easy if you are the shark
his specials are perfect to stop the mobs of soldiers
the wave to push them back the snow storm to decrease
his armies size what more do you need
honestly I beat him under 10 mins
The game is about teamwork. A lot of people who gets called noobs are just poor at this, and few of the better players are good at helping them. Try to stick with your team, don't rush too far ahead and get killed (each time you die you hurt your team), use your skills (they're all good) and watch your buddies' backs - each time you let them die you'll frustrate them and hurt your team. And for Pete's sake, don't stand right on someones ass all the time and block them from retreating.
AND LIKE I SAID EARLIER TRY NOT TO DIE MAKES IT EASIER FOE YOUR TEAMATES
 "Backyard Monsters (removed)"){kind=icon}
 "Billy the Pilot"){kind=icon}
 "Nano Kingdoms"){kind=icon}
 "Minions"){kind=icon}
 "Gravitee Wars"){kind=icon}
 "Learn to Fly"){kind=icon}
 "zOMG"){kind=icon}
 "Starland Multiplayer TD"){kind=icon}