This week's action-packed instalment sees the surviving students attempt to escape from the academy with a little help from a very special guest.
Episode four picks up exactly where last week's show left off, with Lasky, Silva, Vickers, Sullivan, Orenski and Chen trying to stay alive amid a sea of gunfire and explosions. The chaotic early scenes are exactly the kind of thing we were expecting from a series which took a while to get going.
With brightly coloured lasers, hulking great aliens and dead bodies everywhere, a shell-shocked Lasky is jolted back to life by his girlfriend Silva, who leads him back to the dorms with the other students. Presumably they've got more on their minds than resuming last week's make-out session.
In what turns out to be a series first, Lasky doesn't use the dorm time to pop in a video of his brother, but instead joins in with the panicked chatter of his classmates, who still can't figure out what's going on, but come to the realisation that this is a whole new war.
Evoking memories of classic corridor shooters such as Doom, the next scene is particularly tense. An alien invader has made its way to the dorms and is dispatching anybody who dares cross its path. To make matters worse, it's using a cloaking device, something which strikes fear in Lasky, who's on watch duty.
Led by the courageous Chen, the students decide to head to the training room to pick up some weapons, which presumably will be loaded with live ammo instead of paintballs. Somewhat predictably, this is the last we see of Chen, who's ruthlessly killed with a Covenant laser sword. RIP Chen, you will be missed.
Lasky's run of bad luck continues, as the training lockers aren't responding to passwords, rendering the plan useless and the weapons unusable. We can't help but feel that the students would have a better chance of survival without Lasky, whose unlucky streak is starting to rub off on his friends.
With the cadets stranded and the Covenant closing in, it's starting to look a little bleak for the students. Vickers, who's gone from angsty teen to honourable soldier in a matter of days, tries to take one of the alien invaders out, but is shot down for his troubles. Shame, because we were just starting to like the guy.
Laser sword unsheathed and the students cowering, we're finally introduced to Master Chief, whose appearance is punctuated by a rousing piece of music fit for a hero.
With Master Chief leading, things are starting to look better for the cadets, who are soon informed that they are the only survivors on the planet. Clearly when the Covenant strike, they strike hard. The plan of action is to get to the Warthog, which Lasky volunteers to drive - no doubt it'll be out of gas.
Getting to the Warthog proves easier said than done, however, although the cocksure Master Chief tells them to stay close if they're to have any chance of survival. What follows is another of Forward Unto Dawn's slow-motion action sequences, with Silva picking off Covenant soldiers while Chief dances in and out of cover, eliminating any stragglers.
It's another fine Forward Unto Dawn battle sequence, which helps to erase memories of those slow-paced opening episodes, where the only action took place on the paintball field and the only danger of death was if Lasky decided to itch those blisters.
After a slow start, we're really starting to enjoy Forward Unto Dawn and look forward to next week's final episode, ahead of the game's November 6 release. After teasing it for so long, the Warthog ride promises to be the highlight of the finale, although how they deal with an invasion that has wiped out an entire planet remains to be seen.
Halo 4: Forward Unto Dawn will return for episode five next Friday, November 2 at Machinima.
Watch the fourth episode of Halo 4: Forward Unto Dawn below: