N-Two Guide: Cryo Zoning and Frozen Doors
Six frost grenades, a flask that seals doors, and a freeze that ends a push. How the cryo engineer controls space instead of killing.
N-Two (Gabriel Mercier) is the Engineer added with Season Meltdown, and he is the only operator in the game whose kit can physically close a route. His whole design is cold: slow the push, freeze it, and make the enemy fight through a temperature they did not choose.
He is not a damage pick. He is the operator who decides how long a fight lasts, which in Operations is often worth more than whoever is holding the better rifle.
Freeze stacks explained
Everything in his kit applies cold, and cold stacks until the target is frozen solid — unable to move, shoot, or reload for a short window. Treat the freeze as an interrupt rather than a kill window: what the stacks buy you is the half-second to line up the follow-up, not the follow-up itself.
The trait changes by mode, and both halves matter:
- Operations (Frost Effect / Frostbite): targets slow progressively until frozen, and frozen targets lose fracture resistance — meaning follow-up damage breaks through more easily.
- Warfare (Freeze Buildup / Permafrost): the same slow and freeze, plus reduced vehicle handling. That last part is the surprise: he is a soft counter to armour pushes, not just infantry.
Door locking
Cryo-Flask is thrown, and on impact it releases freezing gas that forms a subzero zone. Enemies inside accumulate cold and cough violently — which is your audio cue that the flask landed on someone.
The detail that changes how you use it: it can freeze closed doors. A frozen door is a route the enemy cannot use without spending time and noise, and a door you have sealed is a flank you no longer have to watch.
Two consequences. First, throw flasks at doors you want to keep shut, not just at rooms you want to empty. Second, once you have sealed a route, your own squad cannot use it either — commit before you freeze, not after.
Frost Launcher burst
Frost Launcher is temporary gear that fires up to six cryogenic grenades, with fire rate climbing the longer you keep shooting.
Six rounds is enough to zone one corridor properly, and nowhere near enough to zone a map. Spend them where enemies are forced to bunch: stairwells, room exits, the mouth of a tunnel, the extraction approach. Firing them one at a time at spread-out targets wastes the whole launcher.
The Homing Stun Grenade is the opener for those bursts: it tracks, so it cannot be dodged by stepping behind cover, and it disrupts vision long enough for your first flask or grenade to land.
Mode traits differ
Do not carry a Warfare plan into Operations. In Warfare the value is stalling a vehicle push and holding an objective lane. In Operations the value is denying a door, breaking a pursuit, and buying your squad the seconds it needs to extract with loot.
The same operator, played the same way in both modes, underperforms in both.
Squad pairing
He needs someone to finish what he freezes. D-Wolf and Tempest both rush slowed targets well; Luna makes the flask land more accurately because she already knows where the enemy is. On the maps built around him — AZ3 Nuclear Plant most of all — a squad that pairs cold with detection gets far more than either piece alone.
Sources & References
This guide is verified against the game's own data and official communications. For patch notes, current balance, and authoritative specifics, consult the references below. Where a precise number cannot be verified, we explain the mechanic rather than invent a figure.
- Delta Force on Steam — patch notes, current season, and authoritative game data.