* BigLippedAlligatorMoment: The entire second fight with [[spoiler:Leone]].
--->[[spoiler:'''Leone:''' PANSIIIIIIES!]]
* GameBreaker:
** The Metal Gear cards (which replicate the attacks of various different giant robots throughout the franchise) essentially kill all non-boss enemies in front of the player and can be acquired by buying/finding booster packs - the only downside being a gigantic amount of cost, but most players have no use for it when a room is cleared of enemies. Also, enemies cannot move past the bodies of of fallen character (if one of them is killed) which can allow the living character to get to safe location and use long range weaponry. Its only downside is its cost (25 - 23 or thereabouts if you upgrade it), which means you must wait two or three full enemy turns to move again.
** The [=XM8=] is even better, it is cheap, got a good hit rate and when used it sends a flurry of StatusEffects onto the enemy, and it gives a very good amount of Move Panels if you decide to use it as a Move Card, and it can be obtained right of the bat with a password.
** If used properly, Stealth Camo, it's more commonly obtained than the other gamebreakers and with some minus cost cards, (Especially the late-game 12 Cost reduction cards) it can be used to run past large groups of guards, using the cost reduction and spare Stealth Camo Cards to stay invisible the entire time, even better, the usual downsides of Stealth Camo (It being automatically deactivated if you bump into a guard) is completely absent in Ac!d, you can trap a guard in a corner where he can't move and attack him without him even being able to attack back and it works with no penalty during alerts. (While other games either make it ineffective or let guards see you at close range during an alert.)
* TheyWastedAPerfectlyGoodPlot: Part of Ac!d's first game has a substory where the [=BEAGLE=] group is responsible for the events that happened outside of Moloni. It was never followed up on, given that Konami is not pursuing any Ac!d-based games.