I can't decide how I feel about
Overkill. On one hand, the third stage is amazing. Mounted gun placements that are actually useful, getting to call in air strikes, rushing to defend three different fronts. It's pretty damn good.
On the other hand... The second stage involves walking through tunnels filled with neurotoxin, which slowly drains your health. Which could be a very punishing mechanic on higher difficulties. Plus, the final stage is a rolling crescendo, where you're forced forward by a spreading cloud of neurotoxin. This one is really difficult with bots, because they fall behind quite easily, and the cloud is an instakill.
I wouldn't put it high on the list to play in co-op, but that third stage is so amazing.
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I wish
Devil Mountain supported versus, because it's a great map. I've played through it several times now, and it works pretty well.
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My rankings for what I think are the best maps we haven't played co-op yet (*supports versus):
- Suicide Blitz*
- Devil Mountain
- Dead Before Dawn*
- Yama*
- Energy Crisis
- Overkill
Keep in mind that I've only played these on Easy with bots. I can't vouch for what levels of bullshit they'll feel like on Advanced. Though none show obvious signs of being ridiculous, save Overkill.
Also, I think I need to use
THIS.