I almost thought about playing this game! Until I realized it was ECgames...makers of abandonware Sacred Seasons 1 & 2. You NEVER EVEN FINISHED SACRED SEASONS 2..... No thanks, moving on.
Do clean-up mission until you can unlock all the weapon slots to 1. Unlock the MPG and start unlocking until you can use the rocket launcher. Spend money on unlocking skills after. Breeze through.
 "Bit Heroes Runner")
 "Infinite Hero")
 "Sentry Knight Conquest")
 "Lionheart Tactics")
 "Cloudstone")
 "The Enchanted Cave 2")
 "Raze 3")
 "Strikeforce Kitty 2")
 "Clicker Heroes")
 "oO")
 "StrikeForce Kitty")
 "Dangerous adventure")
 ":the game:")
 "Decision")
 "Marty the Martian Maintenance Man HTML5")