Okay, level 1 is done. Raphael doing his best M. Bison imitation:
http://dehacked.2y.net/microstorage.php/info/2303/TMNT3%20test.fcm
A few notes:
* throwing takes less net frames (attack, foot explosion and recovery time) than drilling, but sometimes I'll drill them anyway. Sometimes the reason is obvious (2-3 at a time), other times it has to do with the way the screen decenters depending on whether I drill or throw.
* there's a part where foots come out of the dirt. The first time, all the foots are invincible until they touch ground, but for some reason one of the foot is vulnerable coming out the second time.
* when the jumpkick foot attack you in a pincer formation (two coming out at the same time from either side), it's not possible to kill them both before one of them jumpkicks. Once they jumpkick, you have to wait until they land because they're invincible during the whole jumpkick. Fortunately, this only happens a few times in level 1, and all the times it happens it's unavoidable (I tried!).
* As Baxter said, Rocksteady has 64 hit points. Raphael's drill takes off 7 HP, so he requires ten drills to kill; however, you can replace the last drill with a jumpkick and still kill him in the same amount of hits. I can use the jumpkick to manipulate Rocksteady into not doing the shoulder charge, which wastes a lot of time.
Level 2 should be fun. This is the main reason I wanted to do a 2P run initially, as I'm pretty sure it's not possible to kill all the flying foot with just one player. I'll try, though. I still have a snickin' sispitchin that 2P won't be faster overall anyway because of the extra enemies.