Why all weapons would be ineffective against plate in a plausible ruleset ?
Swords, axes, warhammers, pikes, halberds, etc. should all do just fine, but a rapier for example not so much.
Plate armour is damn near impervious. Slicing through it or stabbing through it with your sword is Impossible (with a capital I.) You MAY be able to pierce it with a longbow, but they generate an obscene amount of force and very few people have the strength required to wield one (constantly using a longbow results in a warped spine.) You MAY be able to pierce it with a crossbow, but it depends on the type of crossbow and how thick the plate armor is. There are 3 conventional ways you deal with plate armoured opponents. 1 – You thrust at the joints, these are the ‘weak points’ of the armour. This is one of the reasons why a lot of European swords are pointy and Japanese swords are all curved. Europeans had superior armour, and thrusting was the primary form of attack against it. 2 - You get a heavy, blunt weapon. The tactic here isn’t to beat the armour, the tactic is to break the bones under the armour. 3 – You put the fighter on the ground and finish him off there.
Hacking, slashing and thrusting indiscriminately, like people do in most games and TV series, won’t work.
But, if you encounter an enemy that you can't scratch in direct melee for whatever reason. Why not:
- shot him with a crossbow,
- throw at him an oil flask and put on fire with a torch,
- cast a fireball,
- entangle him with a net,
- lure him on a trap,
- immobilize with teh magic,
- flank him with other character in a squad based game,
- chose a quest solution that doesn't involve combat with him,
- sneak behind him when unalerted and kill with poisoned dagger,
- run away,
- etc
1 –Using a crossbow may work, yes. But people who wanted to play as a swashbuckling warrior may be a little miffed when they discover they need to use a crossbow half the time.
2 – Wouldn’t work. He may have a shield, but even if he doesn’t how close do you need to get to flame his arse? Get too close and he could hack your arm off with his 6 foot long, 2-handed sword. Do you actually think throwing a torch would work?
3 – Using magic would work, but the point was showing you how much it would suck being a warrior. The reason being warriors would be stuck using a plausible ruleset where almost nothing would work, while mages could waltz through the game bending rules.
4 – A net? No.
5 – Traps require planning, what if he got the jump on you.
6 – See point 3.
7 – I hope your teammate isn't wielding an axe
8 – Most fights in RPGs don't have quest solutions.
9 – Sneaking behind with a dagger could work.
10 – Running away would definitely work ... depending on your stats.
Sounds awfully limited to me. If you want to use swords, you're limited to thrusting at 2 inch wide 'weak points' all game. Not to mention unbalanced, because you'd rule as a mage and suck as a warrior.