Could use some improvement
The concept is great and the characters are various, but this game takes way too much time. Put in more stages, and less enemies per stage. Also some units could use a little bump in HP. I don't mind every enemy having superhigh hp, since that's what I like, the best part of top down shooters: boss fights.
The main characters are kind of fine, each of them can do well, I prefer the white guy, but the blue takes the cake regardless, especially with it's special.
The pink one is a little low on HP, but I don't mind it.
Amongst the mercenaries, the green mantis guy is the only one who is really awesome in nearly every situation. Hell, he's better than everything else, since he can just avoid any frontal attacks with ease, while taking out everything next to him.
The rich guy also has some situational use, if the enemy is big enough you can move over them and just let lose.
The orange one is still decent, he is slow sure, but he can shine against weak shoting enemies, due to his huge armor.
However the last two chars are jokes. The pink "sniper" isn't anything like a sniper. She shoots a fairly fast bullet with half-decent power, not to mention she's slow. Either make her attacks stronger and slower, or make her faster.
Now the black guy is ridiculusly weak, that one is a joke, I only got him to lvl 3 so far but he dies of way too easily even on the first stage, and I can shoot without missing for 60 secs straight but still not make visible progress on the second stage.
I say:
-get rid of silence, or redesign it
-add specials for mercs(you know, diagonal rockets for the orange, and alternate up-down shooting mode for the green one, some incredibly good special to the black one, an aoe that covers more for the money guy, and possibly mines for the pink sniper)
-Easier leveling
-Less time consuming
-Less enemies at first(I can only imagine how will stage 3 look like...)
-More stages
-More mercs(that's always welcome)
-Maybe have a different model for each enemy on the tactical map, yeah, that'd be cool
-Have squares, and pyramids in battle too. The colors should be static(ball-pink, square-blue, pyramid-white). Also different attack patterns: squares-cross, two bullets in each direction, pyramids-three way, 3 bullets in each direction.
-Possibly an upgrade system and/or achievements(not neccesarry)
I think that's about it. I'm not supposed to tell you what to do exactly, I'm just saying how I'd have done it, with way more variety.
Anyway afterall that, I find this game amusing, but it takes way too much time.