At level 24 i took tactic then with the addition of the second protector, it was far beter than the previous levels.
And yes the assault bot rocks, at level 32 i made him soloing an orange minion ( a flying robot with missile ) while other bots were busy with another mob, well it was long but i didn't have to do something for protecting my bot.
After the level 32, you enter in another world (star wars for the sound 
), after being mainly a single target team, they became an AOE team that can clean quickly a group of mobs with the right sequence of powers.
Offtopic:
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After the level 32, you enter in another world (star wars for the sound ), after being mainly a single target team, they became an AOE team that can clean quickly a group of mobs with the right sequence of powers.
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True!. Had one spot with loads of council (yellow), spent a few moments to make a trap of my own. Bots on all sides, used protectors to pull them to that "sweet spot".. and.. they were like "omg". They went down quick. Once i didn't see much because of explosions going off everywhere :P.
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im starting to regret choosing a mastermind as my main charicter, it was fun from level 1 to 15 but now iv hit 20 its just ugg
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I picked up my MM at the start of the day at level 21, and 11 hours later he's at level 25 - "ugg"? 
@Synaesthetix
"Here, take some more bees with you. You may need them."
Union: FU//LoUD
"that Syn is that that" - Mothers Love
I started with ninjas, but they started to like melee to much and started to die to often, started another MM with robos, Ive found my perfect AT, being ranged at heart the robos are superb. I just sit back and manage the destruction from afar
EV
Union
Ebola EngEng Lvl 50 Blst
Maelstrome DrkDrk Lvl 50 Scrp
SRobo-tron RoboTraps Lvl 47 MM
Flaming Radium FireRad 35 Controller