I could only find 45. I feel like they kinda detract from the flow of the game though. Searching every nook and cranny for balls of poo when you're in a dangerous environment with a clear objective seems silly.
I like it, and the art style is pretty cool. I agree with Maleski that pushing is kinda of stupid though. However, the benefit to blocking over pushing to being able to attack your opponent while they're recovering.
Almost have all of the achievements. I could easily get Over-achiever if I put in the time (just Lil' Jim and Mike left), Horde Fighter (dont know how to get), and Zombieez (Which I dont think I have the patience for. Stupid luck-based achievement)
Yes, got 7000! It's a lot easier upon realizing that killin g ships with allies gets you no health. Keep your allies close so that that lag behind you, and only use them to destroy blue and green mines. You'll get so much health that you'll be able to withstand the humans for a long time.
Here's some tips
1. The game is all about maneuvering. Separate your enemies and don't forget to run when they close in on you
2. Use your enemies' attacks against them. Specials and boss attacks do huge damage to both allies and themselves.
3. Use bombs wisely! Learn to connect with them and they'll quickly turn your enemies into bloody splatters.