Here is the full list of all 35 Valfaris achievements.
Finish the game in Full Metal Mode.
Destroy all 9 Tetra Sentries in the Power Chambers in a single life.
Die 50 times.
Finish the Landing Pad without activating any checkpoints.
Defeat Hydravok.
Complete the game in under 2 hours.
Finish the game with 10 or fewer deaths.
Parry Hydravok’s heads 3 times in a single life.
Discover every secret area.
Defeat Furrok.
Kill Furrok by delivering the final blow with his own flaming hammers.
Find every weapon.
Upgrade 10 different weapons at least once in a single playthrough.
Parry an enemy melee attack 15 times in a single playthrough.
Defeat the Ironclad Desolator.
Destroy 60 crates in a single playthrough.
Fully upgrade a pistol weapon.
Motivate a Stone Worm in the Worm Tunnels 10 times during a single ride.
Fully upgrade a melee weapon.
Destroy 70 lights in a single playthrough.
Kill 1000 enemies in a single playthrough.
Fully upgrade a destroyer weapon.
Exchange 15 Resurrection Idols for Blood Metals in a single playthrough.
Defeat Itnan.
Defeat Lord Jylskel.
Defeat the Exterminator.
Hit an enemy with a Shield Counter-Blast 25 times in a single playthrough.
Kill 10 Hive Workers by reflecting their gunk balls back at them in a single life.
Slash and destroy 40 projectiles in a single playthrough.
Defeat the Bloodstalker Queen.
Kill all 8 leaping Swamp Worms in the Eco-Dome.
Defeat the Junk Gargoyle.
Drop the wrecking ball on the Junk Gargoyle.
Upgrade a weapon for the first time.
Die for the first time.