ufo could like it is on the title shoot a beam below him get a faster speed and chase these ghosts. and electricity alien he could shoot one big lightning that deals 10 or something damage and goes kinda like any other lightning, or he could just summon lightning from the clouds that has chain lightning. as for soldier? maybe an ability path where he can go into the ufo and control it for a few tens of seconds. a cool thing for bomber could be that he shoots one bomb and it spits into extra that go forward like there's 1 then after explosion 2 and finally 6 or it could be like cluster bomb from btd i leave this to you on how they could fly (like 3 from an explosion in a form of a triangle and then 3 from all of these bombs that make a detailed triangle). summoner again i think it would be cool if he could use the ghosts to his advantage in some way or another like make them fight for him or change them into decoys that can be used as bait (or that could be an extra class). For the bomber im thinking he could shoot mines that stay for about a minute at max path its 3 per shot (or maybe more idk).

First of all summoner (mastermind) i think if there will be an ability slot he could perhaps boost all his summon things (including the U.F.O.) in some like 100% attack speed boost and the others could be other extra boosts and bots. also one thing is a load button like 80 waves in 1 sitting is rare to happen. now lemme get into other path stuff.

and the giant robot kinda sucks with it's bad accuracy, when there is a hord it does great but when its supposed to hit 1 enemy it just shoots behind it (espesially the laser). first of all a mode where you dont recover hp that would be nice. Anyways there's stuff that i still haven't mentioned before (and in this there's probobly more forgotten stuff).

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