Sort of compiles

Time to fix xenoarch, and then the map.

code/modules/projectiles/projectile/special.dm

@@ -198,7 +198,7 @@ obj/item/projectile/kinetic/New()
 	var/turf/target_turf= get_turf(target)
 	if(istype(target_turf, /turf/simulated/mineral))
 		var/turf/simulated/mineral/M = target_turf
-		M.GetDrilled()
+		M.gets_drilled()
 	new /obj/item/effect/kinetic_blast(target_turf)
 	..()
 
@@ -239,3 +239,34 @@ obj/item/projectile/kinetic/New()
 		else
 			do_teleport(target, target, 15) //Otherwise it just warps you off somewhere.
 
+/obj/item/projectile/plasma
+	name = "plasma blast"
+	icon_state = "plasmacutter"
+	damage_type = BRUTE
+	damage = 5
+	range = 1
+
+/obj/item/projectile/plasma/New()
+	var/turf/proj_turf = get_turf(src)
+	if(!istype(proj_turf, /turf))
+		return
+	var/datum/gas_mixture/environment = proj_turf.return_air()
+	var/pressure = environment.return_pressure()
+	if(pressure < 30)
+		name = "full strength plasma blast"
+		damage *= 3
+		range += 3
+	..()
+
+/obj/item/projectile/plasma/on_hit(var/atom/target)
+	if(istype(target, /turf/simulated/mineral))
+		var/turf/simulated/mineral/M = target
+		M.gets_drilled(firer)
+	return ..()
+
+/obj/item/projectile/plasma/adv
+	range = 2
+
+/obj/item/projectile/plasma/adv/mech
+	damage = 10
+	range = 3