Hit a brick wall in training

[Icybow73]

I just shot them while I tried to get behind them. I eventually blew them up without sheilds going down

 

[1onenine9]

I'm having trouble just getting behind the first one. I've favorited the video above of the perfect run and i've been trying to replicate it, by getting through them all without losing hardly any shields.

this is going to take me a while... : (