Defeat Gonarch in Half-Life Part 54. Learn strategies for the boss fight, including weapon choices and avoiding acid attacks.
Walkthrough
- 1Locate the cluster of three spiky plants next to a large rock wall near the area's border.
- 2Hide behind the rock wall from Gonarch and use the ledge behind it to reach a healing pool.
- 3Damage Gonarch by firing hornets through the gap between the rock wall and the plant cluster, aiming slightly below its vulnerable sac.
- 4If Gonarch fires acid, quickly run along the ledge behind the rock to avoid it.
- 5After Gonarch is damaged enough, it will crash through vines blocking a cave tunnel entrance.
- 6Ensure all baby headcrabs are killed, then enter the cave tunnel.
- 7Find an armor battery and ammo canister near a dead HEV (Hazardous Environment suit) guy (a non-player character wearing protective gear). Save your game here.
- 8As section c4a2a loads, run forward to avoid a rockfall.
- 9Use the gluon gun to blast Gonarch's sac with a continuous stream of fire, resuming fire when your aim is sure.
- 10When Gonarch spits acid, run forward to avoid it.
- 11If gluon ammo is insufficient, switch to the RPG or assault rifle to damage Gonarch's sac.
- 12If hit by acid or spiky legs, quickrestore (reload a previous save) and try again.
- 13Alternatively, use fully powered altfire (alternate fire mode) blasts from the gauss gun, with three blasts being sufficient.
- 14Stay back near the cave-in, charge an altfire blast, and hit Gonarch when it appears.
- 15Move into the rubble corner if knocked back and charge another altfire blast.
- 16Blast Gonarch again when it appears, then switch to the hornet gun to shoot down any baby headcrabs.
- 17Switch back to the gauss gun and charge a third altfire blast.
- 18Finish off any remaining baby headcrabs and ensure Gonarch has moved to the next area.
- 19Before following Gonarch, find the large trapezoid-shaped hole in the ground in the back corner.
- 20Drop into the hole and walk to a small stick-out rock.
- 21Turn around and crouch-walk backward onto the rock, ready to shoot an appearing headcrab with hornets.
- 22Stand up, turn around, and jump to the stick-out rock on the left to avoid more headcrabs.
- 23Enter the small room past the rock for a healing pool; refill your health to 100.
- 24Return to the stick-out rock and jump to the remaining unexplored rock.
- 25Quickly kill the headcrab in the next room with hornets.
- 26Collect the ammo canister and armor batteries.
Tips:
- To damage Gonarch's sac, aim slightly below it so the hornets swerve up and hit the target.
- The acid attack can be avoided by standing so you can only halfway see Gonarch, though this is difficult as it moves frequently.
- For non-Source versions of Half-Life, avoid the strategy of firing up at Gonarch from below using the hornet gun from the healing pool, as it may cause Gonarch to become invincible. Keep a backup save if you attempt this.
- It is useful to have a full load of gluon ammo for the first part of the
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