Hazard Prevention

Hazard Prevention (#262)
Released		21 July 2021 (Update)
Members		Yes
Description		Kill the Thermonuclear Smoke Devil without it hitting anyone.
Tier		Elite
Monster		Thermonuclear Smoke Devil
Type		Perfection
League region		Kandarin✓
Advanced data
ID		262

Hazard Prevention is an elite combat achievement which requires the player to kill the Thermonuclear Smoke Devil without it hitting anyone.

The achievement can be completed by hitting the Thermonuclear Smoke Devil and walking under it to avoid damage, then hitting it again, immediately teleporting out and running back to the cave. Setting NPC attack options to right-click makes this easier.

This task can be easily achieved alongside Spec'd Out by teleporting to a player-owned house or Nardah and recharging special attack energy. If standing under the boss is too difficult, you can simply hit the boss once and immediately teleport after, but like above, the final attack must be registered while inside the room.

A less click-intensive method involves freezing the Thermonuclear Smoke Devil, preferably with Ice Barrage, and using a powered staff (e.g. the trident of the swamp) set to the Longrange attack style. Attack the Thermonuclear Smoke Devil four times from a distance. Before the effects of the freeze spell wear off, run out of the cave, re-enter and refreeze from max distance again, and attack four times.

If playing on RuneLite, it can be helpful to use the Radius Markers plugin by "Skretzo", setting an entry to have the NPC ID of 499 with a radius of 8 tiles (the boss's max range). Ice Barrage can be landed from 9 tiles, and powered staves set to Longrange are able to hit from 9 tiles as well.

Be aware that simply clicking the boss from 10/12/14/etc. tiles away will cause your character to run to a distance of 8 tiles away before attacking, due to the way run mechanics work (2 tiles per tick). So either make sure you're at exactly 9 tiles (just outside of the radius box) before attempting to freeze or use your powered stave on the boss. If you're struggling with this, you could also simply walk instead. Repeat until the Thermonuclear Smoke Devil dies. This approach requires a high magic level and damage-boosting gear.

With all strategies, hits that land on the player as they are teleporting out or leaving via the crevice do not invalidate the achievement, however they must be inside the room for the final hit or the task will not complete.

There are 3 Combat Achievement tasks (totalling 12 points) available for Thermonuclear Smoke Devil.

v t e Combat Achievements
	Ghommal Laidee Gnonock Bosses interface
Tiers	Easy Medium Hard Elite Master Grandmaster All tasks (sorted by tier) Free-to-play
Rewards	Antique lamps Easy Medium Hard Elite Master Grandmaster Ghommal's hilt 1 2 3 4 5 6 Dragon hunter crossbow Black Turquoise Slayer helmet TzTok (imbued) Vampyric (imbued) TzKal (imbued) Other Ghommal's lucky penny Ghommal's avernic defender 5 Ghommal's avernic defender 6