Thalos, Sentinel of Seasons

Thalos, Sentinel of Seasons is the T80 ranged boss. To gain access to Thalos you have to deposit a minimum of 100m into the chest located on the dock. You can at any point withdraw that cash, and only if you where to die do you lose 100m from said chest. You are free to teleport out at any given time and NO cash will be deduced from the chest. Use a mount to run there, or General's scroll to teleport, since you will be needing the run energy in the boss arena.

Notable drops: Sylvan helm, Sylvan body, Sylvan legs, Sylvan bow and Everbane emerald

Phases

Thalos has two normal attacks, his regular ranged attack, and an arrow coated in magic (glowing arrow). These arrows do hit through prayer, but with the correct prayer up, their max hit is a 3. Thalos has four phases, each phase have different mechanics. So we will go through them one by one, in detail.

It is recomemded that you turn off 'Auto Retaliate' as this might cause you to get yourself killed. Due to you running into waves or out into the avalanche.

Phase I

First phase of Thalos is not too difficult, there is only one mechanic in the first phase that might cause you some problems, but it won't kill your run, just make the encounter longer.

Thalos, Sentinel of Seasons

Combat Level	1250
Hitpoints	2,300
Slayer Level	1
Aggressive	Yes
Attack Style	Range/Magic
Weakness	Melee
Attack Ticks	4

Combat stats

2,300	0	0	100	460	960
Aggressive stats

0	0	0	200	300
Defensive stats

150	100	110	1000	1750

Flowers: At random intervals Thalos will spawn flowers around the arena, you can AoE these flowers down, or just ignore them. Thalos' will then consume the remaining flowers and heal based on the amount of flowers still standing.

Phase II

Second phase is where the difficulty ramps up a bit.

Thalos, Sentinel of Seasons

Combat Level	1250
Hitpoints	3,000
Slayer Level	1
Aggressive	Yes
Attack Style	Range/Magic
Weakness	Melee
Attack Ticks	4

Combat stats

3,000	0	0	100	460	960
Aggressive stats

0	0	0	200	300
Defensive stats

150	100	110	1000	1000

WAVES: Thalos will sapwn in waves from one of the cardinal directions, you must locate the opening in the wave, and psition yourself accordingly. The waves have a hitbox of 3 tiles, so there is no 'wave-skipping'. The wave deal 40 damage.

LIGHTNING: Instead of arming his bow and firing an arrow, Thalos will raise his hand, and summon lightning. This beam will blind the player for 2 ticks (1.2sec). The blind is counteractable by protecting from magic, but you have to be fast.

Phase III

Third phase does offer a bit of breathing room if you choose to range him down. There are two methods of killing phase three; Walk (Melee) or Ranging. Switch to your range gear, and focus on alternating prayers.

Thalos, Sentinel of Seasons

Combat Level	1250
Hitpoints	2,500
Slayer Level	1
Aggressive	Yes
Attack Style	Range/Magic
Weakness	Melee/Range
Attack Ticks	4

Combat stats

2,500	0	0	80	460	960
Aggressive stats

0	0	0	200	300
Defensive stats

150	100	110	1000	600

Tornado: There will be a tornado chasing you around the arena, only the south-west tile and the tile to the east of it, will hit you. It does decent damage and knocks you back.

Traps: Thalos will throw down 2 bear traps at a time (these do not de-spawn), and if you were to step on them, they will lock you in place.

Phase IV

Fourth and final phase. This is normally your run killer, due to having the most mechanics and one of them being able to one-shot you. Switch back into your melee gear for this phase.

Thalos, Sentinel of Seasons

Combat Level	1250
Hitpoints	3,000
Slayer Level	1
Aggressive	Yes
Attack Style	Range/Magic
Weakness	Melee
Attack Ticks	4

Combat stats

3,000	0	0	100	460	960
Aggressive stats

0	0	0	250	350
Defensive stats

150	100	100	1000	2000

Freeze: If a player is stood still for 12 ticks (7.2sec) you will be frozen in place, you would still be able to attack, but if the Avalanche were to happen, you have to spam click the ground and hopefully have time to get behind the rock.

Healing: Thalos shield himself and spawn winter spirits, winter spirits will heal Thalos for 20 Hitpoints each if left alive. Switch to your range AoE and finish them of as fast as possible.

Acalanche: The sceen starts shaking and a rock will drop from above. Quickly locate the rock and run behind it (south side). When the rock has landed an avalanche will occur. Several waves will spawn behind Thalos and one-shot the player if they are not standing behind the rock. The kill plane will trigger when the second wave hits the back wall, and on every wave until the end. Remember to move on the tiles behind the rock to not be frozen in place, as you want to get back to Thalos and start dps when it ends.

Video

If you are more of a visual learner, watch this YouTube video made by Tangela: Thalos guide

At the end of the video there is a detailed guide on how to 'Walk' Thalos.

Drop Table

	Amount	Rarity
Everbane emerald	1-1	1/80
Sylvan helm	1-1	1/600
Sylvan body	1-1	1/600
Sylvan legs	1-1	1/600
Sylvan bow	1-1	1/600
Lil Thalos	1-1	1/1200
Prize bag	3-3	1/13
Heavy prize bag	3-3	1/13
Deluxe prize bag	3-3	1/13
Crystal key	1-1	1/13
20% Damage Boost Card (Range)	1-1	1/13
5% Luck Boost Card	1-1	1/13
5% Crit Boost Card	1-1	1/13
Grimy dwarf weed	8-20 (Noted)	1/9
Wine of zamorak	8-20 (Noted)	1/9
Magic plank	6-24 (Noted)	1/13
Redwood plank	6-24 (Noted)	1/13
Coins	5m-75m	1/67
Uncut diamond	18-40 (Noted)	1/9
Uncut dragonstone	18-36 (Noted)	1/11
General's scroll	3-6	1/13