And yes, there's a fight between a queen and a marine in a power-loader. Beat the second boss and you'll unlock a neat mini-game based on Bishop's knife trick. There's a demonstrable love for the lore - Giger's space jockey pops up in the background, as does the derelict alien ship on LV-426. Yet if some of the environments feel a little samey, the attention to detail is remarkable. The efficiency of the design is reflected in the thrifty reuse of assets: repeat visits to the Sulaco with fresh tools gradually open up more of this intricate maze.

Respawning enemies, so often an irritation, are an essential part of Infestation's design: a reminder that, no matter where you are, you can't afford to get complacent. Yet Wayforward understands that reward must go hand-in-hand with risk, with such wanderings leaving you further from both your destination and any save points. Spot a hatch just begging to be blown open with a grenade and several minutes later, you might have a more powerful flamethrower. Weapon upgrades, frequently tucked away in the furthest reaches of the map, also encourage thorough exploration. Potential replacements are scattered across the labyrinthine levels, but it's a finite supply, and many marines require a lengthy trek through alien-infested crawlspaces and corridors to reach.

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