Original War Playthrough - Russian Alliance Mission 1

If you didn't turn Burlak back into a mechanic your probably going to be stuck in an unwinnable scenario since you wont be able to outrun any of the patrols or fix your tank.
This is a rather frustrating level due to both the starting patrols (which are difficult to predict/outrun) and the "don't kill too many old friends" medal (which more or less translates into a time limit since due to the infinite spawns Platonov has).
Just get Burlak to the Alliance base as soon as possible, get a few Soldier upgrades and rush back to escort the scientists.