Bunker Infiltration mission need help

[Anon052]

First mission of the second campaign as loyalist. How are you supposed to win this mission? This mission seems unwinable for me. You can't form a line of defense because the enemy is allready right there with heavy hitters like siegedreads or landraiders who you can't reliably kill (you need lucky hits). Movement is crippled because of the lanes so you face the enemy with too few of your own units. I lost every time I tried because of attrition or loosing the capture points.
Anyone could offer some insight?

P.S. There seems to be a bug too. If you move a sentinel over a capturepoint it loses the rest of its movement and stops on the point. If you move another unit over it moves as ordered.

[Capkan]

Not sure if you're still interested, but for our descendants - you have to flank with your centaurs and sentinels, shoot the crates to open line of sight. Main objectives can be reached with your Leman Russes, and you will have to sacrifice a couple of units to dreadnought close combat - like dracosans or veletaris