History YMMV / BioShock2

** The Rumbler is objectively powerful, with its limitless mini-turrets and rockets, but much like a rocket turret, it's more or less completely shut out by the Telekinesis plasmid.

* DisappointingLastLevel: Inner Persephone is this for some. While the level is still fun to explore, there isn't any real final boss [[spoiler:unless you count Sinclair as Subject Omega, who fights like any other Alpha Series but with a longer health bar and can be defeated without the player having to lift a finger]], the [[spoiler:summon Eleanor]] plasmid makes every enemy encounter trivial, and there isn't any other encounter with Sofia Lamb beyond her shouting more of her philosophy at you over your radio.

* GameBreaker:

** In [=BioShock=], you could have up to six Plasmids and 18 Gene Tonics. As for the latter, you could only have to up six of the following categories each: ''Physical'', ''Combat'', and ''Engineering''. Not so in the sequel. You're allowed to have up to eight Plasmids and the Tonic system isn't stratified anymore,

** Thankfully most of the above was ironed out in late 2013 when the PC version was switched over from Games for Windows Live to Steam. Controllers are now officially supported, texture pop-in is typically only present when loading a level or save file for the first time and then there is no more afterward, and many keys are rebindable. Unfortunately, though, the game's UsefulNotes/DirectX 10 mode is still very buggy, as the game is prone to crash randomly when played in that mode. Switching the game over to [=DirectX=] 9 (via a launch command) typically fixes this issue for most (and all that's lost are slightly better-looking water and smoke effects). [[AndZoidberg And the vending machines still don't talk.]]

* SalvagedGameplayMechanic: The HackingMinigame from the first game has been greatly revamped in this one. To whit, it's now a timer-stopping puzzle, where the one in ''[=BS1=]'' was based heavily on ''Pipe Dream'', and the computer would cheat with both hands to ensure that players would use hacking tonics. It also has the potential to reward the player with bonus items or benefits should they stop the timer on blue sections that tend to be much smaller than the green sections needed for a successful hack, encouraging players to actually go through the hack instead of simply buying their way past or using auto-hack tools. The result is a ''much'' faster hacking process that encourages players to go through the game for some goodies instead of bypassing them as quickly as possible.

** Security Bullseye was likely the worst Plasmid in the first game, given its limited use. It's used to mark enemy splicers to paint them as hostile targets for security cameras to sic security bots on. Needless to say, it's redundant with hacking and sees limited use. Security ''Command'', however, allows Delta to summon security bots to his side immediately when upgraded, no need to mark any targets or rely on limited resources anymore!