diff --git a/code/modules/events/anomaly_flux.dm b/code/modules/events/anomaly_flux.dm
index 0ba347af57..4dd8dd87c5 100644
--- a/code/modules/events/anomaly_flux.dm
+++ b/code/modules/events/anomaly_flux.dm
@@ -2,7 +2,6 @@
 	name = "Anomaly: Hyper-Energetic Flux"
 	typepath = /datum/round_event/anomaly/anomaly_flux
 
-	min_players = 10
 	max_occurrences = 5
 	weight = 20
 
diff --git a/code/modules/events/anomaly_pyro.dm b/code/modules/events/anomaly_pyro.dm
index 29c6e15d28..1ac010344e 100644
--- a/code/modules/events/anomaly_pyro.dm
+++ b/code/modules/events/anomaly_pyro.dm
@@ -2,6 +2,7 @@
 	name = "Anomaly: Pyroclastic"
 	typepath = /datum/round_event/anomaly/anomaly_pyro
 
+	min_players = 5
 	max_occurrences = 5
 	weight = 20
 
diff --git a/code/modules/events/atmos_speed.dm b/code/modules/events/atmos_speed.dm
index 9b248e2775..17a02d3dd1 100644
--- a/code/modules/events/atmos_speed.dm
+++ b/code/modules/events/atmos_speed.dm
@@ -1,13 +1,13 @@
 /datum/round_event_control/atmos_flux
 	name = "Atmospheric Flux"
 	typepath = /datum/round_event/atmos_flux
-	max_occurrences = 1
-	weight = 5
-	endWhen = 600
-	var/original_speed
+	max_occurrences = 5
+	weight = 10
 
 /datum/round_event/atmos_flux
 	announceWhen = 1
+	endWhen = 600
+	var/original_speed
 
 /datum/round_event/atmos_flux/announce(fake)
 	priority_announce("Atmospheric flux in your sector detected. Sensors show that air may move [(SSair.share_max_steps_target > original_speed) ? "faster" : "slower"] than usual for some time.", "Atmos Alert")
diff --git a/code/modules/events/brain_trauma.dm b/code/modules/events/brain_trauma.dm
index 34d8e86dcf..0529d102dc 100644
--- a/code/modules/events/brain_trauma.dm
+++ b/code/modules/events/brain_trauma.dm
@@ -6,7 +6,7 @@
 
 /datum/round_event_control/brain_trauma/canSpawnEvent(var/players_amt, var/gamemode)
 	if(!..()) return FALSE
-	var/list/enemy_roles = list("Medical Doctor","Chief Medical Officer","Paramedic")
+	var/list/enemy_roles = list("Medical Doctor","Chief Medical Officer","Paramedic","AI","Chemist","Virologist","Captain","Head of Personnel","Roboticist")
 	for (var/mob/M in GLOB.alive_mob_list)
 		if(M.stat != DEAD && (M.mind?.assigned_role in enemy_roles))
 			return TRUE
diff --git a/code/modules/events/cat_surgeon.dm b/code/modules/events/cat_surgeon.dm
index 76c72a7ec2..cf6e34fd65 100644
--- a/code/modules/events/cat_surgeon.dm
+++ b/code/modules/events/cat_surgeon.dm
@@ -2,7 +2,7 @@
     name = "Cat Surgeon"
     typepath = /datum/round_event/cat_surgeon
     max_occurrences = 1
-    weight = 8
+    weight = 5
 
 /datum/round_event/cat_surgeon/announce(fake)
 	priority_announce("One of our... ahem... 'special' cases has escaped. As it happens their last known location before their tracker went dead is your station so keep an eye out for them. On an unrelated note, has anyone seen our cats?",
diff --git a/code/modules/events/disease_outbreak.dm b/code/modules/events/disease_outbreak.dm
index 490cd0ff21..517cf33b82 100644
--- a/code/modules/events/disease_outbreak.dm
+++ b/code/modules/events/disease_outbreak.dm
@@ -2,7 +2,7 @@
 	name = "Disease Outbreak"
 	typepath = /datum/round_event/disease_outbreak
 	max_occurrences = 1
-	min_players = 10
+	min_players = 3
 	weight = 5
 
 /datum/round_event/disease_outbreak
@@ -12,6 +12,13 @@
 
 	var/max_severity = 3
 
+/datum/round_event_control/disease_outbreak/canSpawnEvent(var/players_amt, var/gamemode)
+	if(!..()) return FALSE
+	var/list/enemy_roles = list("Medical Doctor","Chief Medical Officer","Paramedic","AI","Chemist","Virologist","Captain","Head of Personnel", "Geneticist")
+	for (var/mob/M in GLOB.alive_mob_list)
+		if(M.stat != DEAD && (M.mind?.assigned_role in enemy_roles))
+			return TRUE
+	return FALSE
 
 /datum/round_event/disease_outbreak/announce(fake)
 	priority_announce("Confirmed outbreak of level 7 viral biohazard aboard [station_name()]. All personnel must contain the outbreak.", "Biohazard Alert", "outbreak7")
@@ -22,7 +29,10 @@
 
 /datum/round_event/disease_outbreak/start()
 	var/advanced_virus = FALSE
-	max_severity = 3 + max(FLOOR((world.time - control.earliest_start)/6000, 1),0) //3 symptoms at 20 minutes, plus 1 per 10 minutes
+	var/player_count = get_active_player_count(alive_check = TRUE, afk_check = TRUE, human_check = TRUE)
+	max_severity = 1 + max(FLOOR((world.time - control.earliest_start)/6000, 1),0) //3 symptoms at 20 minutes, plus 1 per 10 minutes
+	max_severity += player_count > 5
+	max_severity += player_count > 10
 	if(prob(20 + (10 * max_severity)))
 		advanced_virus = TRUE
 
diff --git a/code/modules/events/dust.dm b/code/modules/events/dust.dm
index eb7edcafbf..3bece46dcd 100644
--- a/code/modules/events/dust.dm
+++ b/code/modules/events/dust.dm
@@ -17,9 +17,10 @@
 /datum/round_event_control/sandstorm
 	name = "Sandstorm"
 	typepath = /datum/round_event/sandstorm
-	weight = 0
-	max_occurrences = 0
-	earliest_start = 0 MINUTES
+	weight = 5
+	max_occurrences = 1
+	min_players = 5
+	earliest_start = 20 MINUTES
 
 /datum/round_event/sandstorm
 	startWhen = 1
diff --git a/code/modules/events/heart_attack.dm b/code/modules/events/heart_attack.dm
index 8c33e69107..930a2b884f 100644
--- a/code/modules/events/heart_attack.dm
+++ b/code/modules/events/heart_attack.dm
@@ -1,9 +1,17 @@
 /datum/round_event_control/heart_attack
 	name = "Random Heart Attack"
 	typepath = /datum/round_event/heart_attack
-	weight = 20
+	weight = 10
 	max_occurrences = 2
-	min_players = 40 // To avoid shafting lowpop
+	min_players = 10 // To avoid shafting lowpop
+
+/datum/round_event_control/heart_attack/canSpawnEvent(var/players_amt, var/gamemode)
+	if(!..()) return FALSE
+	var/list/enemy_roles = list("Medical Doctor","Chief Medical Officer","Paramedic","Chemist")
+	for (var/mob/M in GLOB.alive_mob_list)
+		if(M.stat != DEAD && (M.mind?.assigned_role in enemy_roles))
+			return TRUE
+	return FALSE
 
 /datum/round_event/heart_attack/start()
 	var/list/heart_attack_contestants = list()
diff --git a/code/modules/events/mass_hallucination.dm b/code/modules/events/mass_hallucination.dm
index 0801e38507..d8e52cf46d 100644
--- a/code/modules/events/mass_hallucination.dm
+++ b/code/modules/events/mass_hallucination.dm
@@ -2,7 +2,7 @@
 	name = "Mass Hallucination"
 	typepath = /datum/round_event/mass_hallucination
 	weight = 10
-	max_occurrences = 2
+	max_occurrences = 5
 	min_players = 1
 	var/forced_hallucination
 
diff --git a/code/modules/events/supermatter_surge.dm b/code/modules/events/supermatter_surge.dm
index 78b5c9e70c..dd78e379ca 100644
--- a/code/modules/events/supermatter_surge.dm
+++ b/code/modules/events/supermatter_surge.dm
@@ -2,7 +2,7 @@
 	name = "Supermatter Surge"
 	typepath = /datum/round_event/supermatter_surge
 	weight = 20
-	max_occurrences = 4
+	max_occurrences = 5
 	earliest_start = 10 MINUTES
 
 /datum/round_event_control/supermatter_surge/canSpawnEvent()
@@ -37,7 +37,7 @@
 
 /datum/round_event/supermatter_surge/start()
 	var/obj/machinery/power/supermatter_crystal/supermatter = GLOB.main_supermatter_engine
-	var/power_proportion = supermatter.powerloss_inhibitor/2 // what % of the power goes into matter power, at most 50%
+	var/power_proportion = supermatter.powerloss_inhibitor * 0.75 // what % of the power goes into matter power, at most 50%
 	// we reduce the proportion that goes into actual matter power based on powerloss inhibitor
 	// primarily so the supermatter doesn't tesla the instant these happen
 	supermatter.matter_power += power * power_proportion
diff --git a/code/modules/events/supernova.dm b/code/modules/events/supernova.dm
index b6a389f345..1b45cbf831 100644
--- a/code/modules/events/supernova.dm
+++ b/code/modules/events/supernova.dm
@@ -1,8 +1,8 @@
 /datum/round_event_control/supernova
 	name = "Supernova"
 	typepath = /datum/round_event/supernova
-	weight = 10
-	max_occurrences = 2
+	weight = 5
+	max_occurrences = 1
 	min_players = 2
 
 /datum/round_event/supernova
diff --git a/code/modules/events/vent_clog.dm b/code/modules/events/vent_clog.dm
index cd7b23a577..57f2648573 100644
--- a/code/modules/events/vent_clog.dm
+++ b/code/modules/events/vent_clog.dm
@@ -3,7 +3,6 @@
 	typepath = /datum/round_event/vent_clog
 	weight = 10
 	max_occurrences = 3
-	min_players = 25
 
 /datum/round_event/vent_clog
 	announceWhen	= 1
@@ -11,7 +10,7 @@
 	endWhen			= 35
 	var/interval 	= 2
 	var/list/vents  = list()
-	var/randomProbability = 1
+	var/randomProbability = 0
 	var/reagentsAmount = 100
 	var/list/saferChems = list(
 		/datum/reagent/water,
@@ -92,7 +91,7 @@
 
 	var/datum/reagents/R = new/datum/reagents(1000)
 	R.my_atom = vent
-	if (prob(randomProbability))
+	if (randomProbability && prob(randomProbability))
 		R.add_reagent(get_random_reagent_id(), reagentsAmount)
 	else
 		R.add_reagent(pick(saferChems), reagentsAmount)
@@ -106,7 +105,7 @@
 	name = "Clogged Vents: Threatening"
 	typepath = /datum/round_event/vent_clog/threatening
 	weight = 4
-	min_players = 35
+	min_players = 15
 	max_occurrences = 1
 	earliest_start = 35 MINUTES
 
@@ -118,7 +117,7 @@
 	name = "Clogged Vents: Catastrophic"
 	typepath = /datum/round_event/vent_clog/catastrophic
 	weight = 2
-	min_players = 45
+	min_players = 25
 	max_occurrences = 1
 	earliest_start = 45 MINUTES
 
diff --git a/tgstation.dme b/tgstation.dme
index b22af21627..4f01d37497 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -2109,6 +2109,7 @@
 #include "code\modules\events\anomaly_grav.dm"
 #include "code\modules\events\anomaly_pyro.dm"
 #include "code\modules\events\anomaly_vortex.dm"
+#include "code\modules\events\atmos_speed.dm"
 #include "code\modules\events\aurora_caelus.dm"
 #include "code\modules\events\blob.dm"
 #include "code\modules\events\brain_trauma.dm"