History YMMV / MechCommander

* GameBreaker: The salvage mechanics in the second game can net you ridiculous amounts of C-bills quickly. After battles, you are given first pick at any salvageable 'Mechs on the battlefield, but must pay a fee. This fee is only 70% of the sell price. And if you salvage it during a mission, you don't have to pay anything other than the RP cost.

** Large X-Pulse Lasers in ''Desperate Measures''. Relatively light, relatively common, long-ranged, incredibly fast recycling speed (rate of fire) and monstrous DPS. Equip a team of Heavy/Assault mechs (Atlas/Masakari/Nova Cat/Turkina especially), each with at least three of these babies, and watch as enemy mechs get torn to shreds under a near-constant [[BeamSpam torrent]] [[SpamAttack of]] [[FrickinLaserBeams red]] [[MoreDakka death]].

* MostAnnoyingSound: While atmospheric, and absolutely essential in military communications, your pilots opening every single communication with the same two sound bites reporting their callsign over and over again can start to grate on you over a campaign. Especially if they've got an annoying voice like [[SouthernFriedPrivate Rooster]].

* MostWonderfulSound: Confirmation reports from your mechwarriors of a lethal shot to an enemy cockpit. Judging by their tone over the radio, they love it just as much as you do.

* MostAnnoyingSound: While atmospheric, and absolutely essential in military communications, your pilots opening every single communication with the same two sound bites over and over again can start to grate on you over a campaign. Especially if they've got an annoying voice like [[SouthernFriedPrivate Rooster]].

** The Sharpshooter Ace skill in ''MechCommander 2'', especially when used in conjunction with any of the weapon skills (usually PPC). Headshots become all but trivial with this skill, crushing whatever difficulty the game still had at that point.

** The retracting "Long Tom" artillery turrets in ''Desperate Measures'' (the first game's expansion). This turret hides underground when you come close, but shell your mechs with devastating artillery fire in the meantime. This is worsened by the fact that it tends to be nested deep in a fortified base, with walls making attempts to destroy it difficult.
** Any of the super-heavy tanks like the Shrek or Alacorn in the first game, and the Storm or Legion in the second. These pack heavy-duty anti-mech weaponry that can seriously ruin your day (especially the Alacorn with its THREE [[KineticWeaponsAreJustBetter Gauss Rifles]]) and have enough armor to weather a salvo or three from your 'Mechs.
** Anything with Swarm [=LRMs=], which are ridiculously accurate and shred a 'Mech's legs with ease.

* DemonicSpiders: The retracting "Long Tom" artillery guns in the first game's expansion, and any of the super-heavy tanks like the Shrek, Storm or Alacorn in the second game. The former example hides underground when you come close, but shell your mechs with devastating artillery fire in the meantime. The latter trio, on the other hand, pack heavy-duty anti-mech weaponry that can seriously ruin your day. Also, anything with Swarm [=LRMs=], which are ridiculously accurate and shred a 'Mech's legs with ease.

** Large X-Pulse Lasers in the Mechcommander 1: Desperate Measures Expansion Pack. Relatively light, relatively common, long-ranged, incredibly fast recycling speed (rate of fire) and monstrous DPS. Equip a team of Heavy/Assault mechs (Atlas/Masakari/Nova Cat/Turkina especially), each with at least three of these babies, and watch as enemy mechs get torn to shreds under a near-constant [[BeamSpam torrent]] [[SpamAttack of]] [[FrickinLaserBeams red]] [[MoreDakka death]].

* CompleteMonster: Colonel Renard orders his men to destroy a Gulag full of political prisoners rather than let you rescue them in one mission.

* MoralEventHorizon: Colonel Renard ordering his troops to destroy the Gulag, where innocent people are imprisoned. This disgusts even the normally calm and collected Lieutenant Diaz.

* DemonicSpiders: The retracting artillery guns in the first game's expansion, and any of the super-heavy tanks like the Shrek, Storm or Alacorn in the second game. The former example hides underground when you come close, but shell your mechs with devastating artillery fire in the meantime. The latter trio, on the other hand, pack heavy-duty anti-mech weaponry that can seriously ruin your day. Also, anything with Swarm [=LRMs=], which are ridiculously accurate and shred a 'Mech's legs with ease.