Area 6 Ruins feature mostly regular rank-and-file Reunion enemies, but don't be too lenient, since some of them can catch the player off-guard if they didn't pay attention:
- W (not to be confused with the Operator one), who despite being one of the weakest boss in Arknights, might be problematic for low-rarity teams due to her ability to plant timed C4 explosives on unfortunate friendlies, especially when she is enraged where she will do so on three targets at once. The W: Unquenchable Pyromania contracts will make W more threatening, even to higher-rarity Operators, by buffing her HP, ATK, and DEF, and makes her C4s do more damage as well as reducing the C4 ability's cooldown, bringing a whole new meaning to the term "demolitions expert".
- With the Objective: Sophisticated Armor contracts that buffs melee enemies' HP, DEF, and RES, durable and hard-hitting melee enemies such as Butchers, Armed Militants, and Arts Guard (Leaders) can be more difficult to be brought down than in normal operations even by high-level, high-rarity Operators, leaving sources of True damage (e.g. Amiya's Chimera) the only viable option against them.
- The Senior Caster Leader; having a ranged Arts attack that damages adjacent friendlies to the target could make him problematic if the player deploys their units close to each other, especially with the Objective: High-Performance Scope contracts that buffs ranged enemies' ATK and ASPD, and extends their range (which also affects W).
There is an Active Originium tile in E7; the player should try to not let any enemies pass through it, especially W, since the increased ATK and ASPD it bestows can make the enemies tear apart virtually every Operators with ease, especially if combined with the Originium Zone: Stimulus and/or Anti-Clustering contracts (even though they will lose HP over time, though this could be redundant if their HP is buffed or the Objective: Controllable Infection contract which removes the HP loss effect for enemies under the Active Originium effect is taken)!
