Mutant Nightmare DS help needed
 

in level 2, there is a boulder in the sewers, of which if I get out of the way, I can take an alternate route through the level.
How can I get the boulder out of the way?
I am playing as Michelangelo.

you have to be raph to move the rock

also, on level 4 as Mikey, I am at a dead end: I see a bronze vertical hubcap with blue lights and no matter what other route I check on that part of the level, I can't get through.
How can I get through?

hold the B down for a few seconds and he kicks it..if it's what i think it is...

sorry to pester you all again, but on world 1, I could only find 14 of the 20 crystals.
Can someone please give me information on where all 20 crystals are so I can find the 6 I missed?

u dont get nothin good from gettin all the crystals so just ignore it bro

what do those lines ( - ) mean on the level select screen are they like extra levels how do you unlock them

Far as I can tell, you unlock the bonus '-' levels by playing through as different turtles. Case in point, while the other three turtles all share one path during the Triceraton Invasion part of the game, Raph will go down a different path and hop a ride with Casey instead of April.

A'ight so I'm playin' this
and
How is level 3-3 even feasible?
(Playin' Donnie if that matters)
It doesn't seem like you get even close to enough time to complete the level
I've gotten it to where I can race through it taking super minimal hits and not wasting even a fraction of a second....
and I always get a time over when I still have the final computer terminal to go.

Every.
Time.

This is one of the few TMNT games I don't own, but let me know your play experiences with it. Is is substantially different than the previous two GBA games?

You basically have to rush. Time is critical, you can beat it at 1 second though.

Sounds like somebody's hastily made 10-second level on Super Mario Maker!