The Incinerator. Is it all luck?

Ectar:   Yes and no.   In most situations players focus on damage/weakspots first and areas like fuel tanks/engines second. I can't think of a normal game where I would aim for a fuel tank rather than a known weakspot I can pen (yes I know I'm missing out). For higher tier German tanks it's still hardcoded into my head to shoot lower front plates, however for many other tanks I have no idea specifically where the engine is located on the damage model (note I say damage model, I know where the actual engines are on tanks ).   It's a mission that takes you out of your normal mindset for how you approach a match.  The advice up above is good stuff. I'd also recommend not tunnel visioning on the mission and trying it in batches/limited attempts so you don't feel overwhelmed.