Okay, first of all let me say that I liked this game, though it probably wasn't worth $60. Just wait until it drops to say $40; besides, a patch is being made later that will improve the game (With such features as a partner in Ada's mode)
The game is split into 4 campaigns, each one having a different feel:
- Leon's campaign- Survival horror; it truly does have its fair share of scary moments (A good example would be the graveyard). It was certainly scarier than RE 5, not to mention the fact it had a geniunely good puzzel or two.
- Chris' campaign- Feels more action-oriented than the other campaigns and isn't scary at all; yeah, it's sort of a repeat of RE 5. It's probably my least favorite campaign.
- Jake's campaign- Sorry Leon, but this campaign nailed is the best. It goes for a thriller/stealth feel (What with the Ustanak chasing you, and the requirement to hide from him a few times). Surprisingly, it's quite clever; it's no Metal Gear Solid, but anyone who denies that the part where you need to use remote bombs to distract the Ustanak was genius is obviously just biased against this game. Plus, it features the RETURN OF SHERRY =D Saving her all those times in RE 2 proved to be worth it. As for Jake, he turned out to be a better character than I predicted. He's not as cool as Wesker, but that's a tough act to follow.
- Ada's campaign- I've kind of avoided this campaign, and am waiting for the patch to play it all the way through, but this one probably has the closest feel to the pre-RE 4 games; the puzzels are well-designed for the most part, so yeah, this one gets a passing grade in my book.
The gameplay is a bit of a mixed bag; on one hand, I really don't like the upgrade system and really wish they just used the weapon upgrades. The only really useful skill seems to be field medic (That is, if you're on 1P mode). The defense and melee boosts don't seem to help. But then, I also like the aiming; you can finally move and shoot at the same time, and it's pulled off quite well. I also really like how there are different ways to creatively use weapons; for example, using the quick-shot with the sniper rifel is useful when low on magnum/shotgun ammo.
Also, yes; Mercenaries is awesome enough to make up for Chris' campaign and then some. Just remember to taunt the enemies when you're low on stamina (Press L2 to taunt)