YMMV / Jak and Daxter: The Lost Frontier

• Angst? What Angst?: Keira gets over Phoenix dying almost immediately... at which point she starts making out with Jak.
• Ass Pull: Jak spends an entire mission raiding the pirates, but once he gets on the ship the narrative suddenly has him working alongside Phoenix to retrieve the Eco Seeker they found. Afterwards, they suddenly decide to work together. Most likely an actual plot hole that the writers did not patch for some reason. Note that this is the biggest plot hole in the game, but not the only one.
• Complete Monster: Duke Skyheed is the power-hungry ruler of Aeropa and the true villain of the game. A treacherous tyrant who subjected his own people to agonizing Dark Eco experiments until the entire population were enslaved Dark Warriors, Skyheed wages constant war against the Sky Pirates and Far Drop in an attempt to exterminate all of the lovable rogues. Happily embracing the power of Dark Eco into himself, Skyheed murders his ally Ruskin and proclaims his intentions to harness the Eco Core and spread Dark Eco and Aeropa's power across the globe until is consumed in the name of Skyheed's power.
• Fanon Discontinuity: Many fans brush off the existence of The Lost Frontier for its vastly watered down gameplay and writing. Jak 3 already providing what many felt to be the perfect conclusion to the series doesn't do it any favors.
• Game-Breaker: Eco reflexes. The ability to slow time (technically, speed yourself up, but it functions the same way) at will is useful for almost any situation. It's better than the similar power Flash Freeze in Jak 3: Wastelander (which required you to collect Light Eco) as Eco powers recharge over time.
• Only the Creator Does It Right: Naughty Dog did not develop this game as they had their hands tied with Uncharted. Fans of the series did not take well to this.
• Moral Event Horizon: This is the whole reason why Phoenix does his pirating thing in the first place. He quit his military post in the Aeropan air force because it was the Aeropans who, apparently, started the hideous, mind-altering Dark Warrior Project that Haven later picked up. Even better, the source of dark eco that Aeropa used to fuel the Project was none other than the huge crystal core of their planet, meaning that they were destroying their entire world in the process.
• Replacement Scrappy: Many fans consider the Gunstaff to generally be a poor substitute to the Morph Gun.
• Scrappy Mechanic: The common complaint about the mechanics of this game is that you cannot put away Jak's gunstaff.
• Sequelitis: On the whole this game is very negatively received compared to the high standard that is the original Jak & Daxter trilogy. Reasons for this include the ridiculous premise, monotonous gameplay, undercooked story, and the visual step-down from other games in the series.
• That One Boss: The Hyper mutant, the second-to-last boss fought on foot. It can use three of the Eco powers (Eco amplifier, Eco reflexes and Eco shield), on top of being fast and packing a serious punch.
• That One Level: One mission has a section where you need to Daxterjack missiles being fired at the Phantom blade in order to redirect them to the missile silos. On normal difficulty, this is challenging as the Daxterjacking sequence is longer than for planes. On Hero Mode, the sequence is even longer but the Grip meter remains the same. Unlike planes, you can't Daxterjack the missiles again if Daxter falls off, giving you only one shot at each missile. And unlike the rest of Hero Mode, nothing you do can make this easier - none of the plane mods make Daxterjacking easier.
• Underused Game Mechanic: Eco teleport allows Jak to switch places with Precursor statues and only those statues. It's used for a few puzzles and is impossible to use anywhere else, something that isn't true of the other Eco powers.