It's tough, but the hard fact is, in battle, people are going to die. Holding back and wasting our advantages will only end in more deaths. Shock troops serve a clear purpose - they are not throwing their lives away.
And if you're afraid this is only the beastman scouting party, then what difference do you believe a few dozen men will make against a force "more numerous than the pebbles on the shore"? Either the survivors were exaggerating and this is a full war party or we're doomed, anyway.
This is true, sometimes you need to make a ruthless play in order to win the battle. However, I feel like you're throwing lives away in a manner that isn't strategic. Our 75 obsidian warriors and the two fire apprentices that I'm proposing will face our enemies head-on are the most numerous of our forces, the most skilled, with the best weaponry, a distinct terrain advantage, and ranged weaponry to whittle down the enemy before melee combat begins... and it's STILL going to be extremely difficult for them to hold up for a prolonged period of time. If you throw the meager amount of stone warriors on the front-line, they'll get torn to shreds for no reason.
I'm willing to do whatever it takes to win against these guys, but what you're proposing isn't a sound tactical move. Because the stone warriors and the bears are a weaker force that is less effective and possibly unreliable, respectively, we can't afford to put them on the front lines.
Vernydar: By the time they reach us, we will have whittled them down to some extent. We have 75 men with 3 javelins each, which would amount to 225 javelins among them. Our position at the hilltop would favour our spears and the flame jets of our apprentices greatly as well. While it would indeed be impossible to hold back a force of that size for a long period of time, we don't need a long period of time: we only need a few minutes at most. At that point their forces will have been whittled down and our stone warriors and bears can strike at them from either side.
Remember how tough the beastmen were to kill when we initially encountered them? And that was with our fine obsidian weapons, so imagine how much harder they'll be to kill with weaker stone weapons. That's why I'm suggesting we split off the stone warriors to hit the enemies flanks. They're going to be far more likely to do damage there hitting the enemy from behind than they are engaging the enemy with inferior weaponry head-on.
As for the Wielder of Fire, well, he's certainly the most questionable part of the plan. I don't know what he's going to do. But, let's put his fanaticism and his untrustworthiness aside for a moment. We don't know what trouble he'll bring our way in the future, we don't know what he's planning with regards to our tribe, we don't know what his ambitions are.
But what we do know... is that he wants to kill some fucking heathens very, very badly. A flank on all sides will give him the opportunity to do just that.
If things work out, and I think they will provided that (a) we whittle down the giant and his retinue enough, (b) our flankers approach quickly and (c) we maintain formation and discipline, this is what will happen:
our enemy will be surrounded by us from the outside, while they are cooked alive with fire magic from within. If they're surrounded and packed in tightly, a single fireball/flame stream will kill them off in droves and panic them. I am hoping that this is just the sort of thing that will make them break. I'll grant you that it's a riskier plan given that I don't know what the Wielder of Fire is going to do. But if he follows through with the opportunity we give him (and I think he will) then we can annihilate them without too many casualties.
That being said, I am willing to flop if
Curufinwe says that the Wielder can't lob fireballs in an arc. I grant you that I have no idea what kind of crazy shit that the Wielder is liable to do. But what I do know is that if we're going to win this thing, we're going to need his help no matter what. I know that you are even more mistrustful of him than I am, but I just don't see any way we can win this thing without him -
we're going to have to trust him regardless, I don't see any other way.
We are outmanned and outgunned, and while cunning tactics and favourable terrain will make it a difficult fight for the beastmen, I believe that the Wielder is the only one who can push a contested battle into a decisive victory.
EDIT: Look at this way, bro, my plan is pretty much almost identical to yours. The only difference is that instead of putting our stone warriors with our obsidian warriors/fire apprentices, we split off the former group and flank them so that they can actually do some damage. That's pretty much the only difference.
Yes, it will make the obsidian warriors more vulnerable, but only momentarily. Once they're flanked from either side, the barbarians will have difficulty overwhelming us. Soon, they'll be packed in like sardines. The apprentices will be able to torch many beastmen at once this way.
And, more importantly, this will set the Wielder up for the perfect shot. I know that this is a leap of faith, but we pretty much need the guy to win anyways, so it's going to be a leap of faith either way.