You get this achievement by buying an airstrike from the shop, then use it during a wave in survival.
Easy "Full pockets" Achievement
You get this achievement by killing three bosses and collect the big item they drop in survival.
Easy "Magnate" Achievement
You get this achievement by having 50k available money in survival.
Easy "Mega mex" Achievement
You get this achievement by unlocking the mech, rocket and armor from the upgrade shop in survival.
Easy "STAGE 2" Achievement
You need weapon number five at stage ten. I bought weapon number two then weapon number four then number five and only three turrets (could not afford last weapon if I had all four), extra jump, health and droid.
Easy "STAGE 3" Achievement
You need the 10 000 dollar weapon at stage ten. I bought weapon number four and drone. best thing to do with weapon number four is to jump and shot from the air to hit more. Leave the slow walking enemys and run to the other side. Dont buy any turrets.
Various Achievements
Complete the following achievements to unlock Microsoft Gamerscore points.
Achievement
How to unlock
Armorer (100 points)
Every weapon is important!
Cool guy (100 points)
"Cool guys don't look at explosions".
Full pockets (100 points)
...
Giant killer (100 points)
"I don't care if you are ten metres high. I will kill you anyway!"
