Only the notes could make use of some fixes and additions here.

In the image, the left row shows current tooltips, right side shows suggested tooltips.

Spoiler: 


Here are the modified sections of dota_english.txt required for these changes and additions. Changed values are marked red and new values are marked blue.

Code:
		//ALCHEMIST
		"DOTA_Tooltip_ability_alchemist_acid_spray"									"Acid Spray"
		"DOTA_Tooltip_ability_alchemist_acid_spray_Description"						"Sprays high-pressure acid across a target area. Enemy units who step across the contaminated terrain take damage per second and have their armor reduced."
		"DOTA_Tooltip_ability_alchemist_acid_spray_Lore"							"Using traditional Alchemy from the Darkbrew family, Razzil concocts an acid that dissolves even the toughest metals."
		"DOTA_Tooltip_ability_alchemist_acid_spray_radius"							"RADIUS:"
		"DOTA_Tooltip_ability_alchemist_acid_spray_duration"						"DURATION:"
		"DOTA_Tooltip_ability_alchemist_acid_spray_damage"							"DAMAGE PER SECOND:"
		"DOTA_Tooltip_ability_alchemist_acid_spray_armor_reduction"					"ARMOR REDUCTION:"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_throw"					"Unstable Concoction Throw"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_throw_Description"		"Throw it before it blows up!"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Lore"					"A silver lining to the failure of turning a mountain into gold, this volatile solution has destructive potential."		
		"DOTA_Tooltip_ability_alchemist_unstable_concoction"						"Unstable Concoction"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Description"			"Alchemist brews up an unstable concoction that he can throw at an enemy hero, to stun and deal damage in an area around the explosion. The longer the concoction brews, the more damage it deals and the longer the stun. After 5 seconds, the brew reaches its maximum damage and stun time. However, after 5.5 seconds, the concoction will explode on Alchemist himself if not thrown."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note0"					"Alchemist can move and act normally while brewing."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note1"					"A timer above Alchemist's head indicates the remaining brew time. This timer is visible to enemies."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note2"					"Alchemist can deny himself with this ability."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note3"					"Unstable Concoction cannot be disjointed."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note4"					"Once thrown, Unstable Concoction stops brewing."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_Note5"					"The area effect still applies when blowing up on self."
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_max_stun"				"MAX STUN:"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_max_damage"				"MAX DAMAGE:"
		"DOTA_Tooltip_ability_alchemist_unstable_concoction_radius"					"EXPLOSION RADIUS:"
		"DOTA_Tooltip_ability_alchemist_goblins_greed"								"Greevil's Greed"
		"DOTA_Tooltip_ability_alchemist_goblins_greed_Description"					"Alchemist synthesizes additional gold from his enemies and bounty runes. With each kill, Alchemist earns base bonus gold and extra bonus gold. If Alchemist kills another unit which yields gold within the next %duration% seconds, an additional instance of Extra Bonus Gold is added to the total. Additionally, causes bounty runes to yield %bounty_multiplier_tooltip% times their normal gold."
		"DOTA_Tooltip_ability_alchemist_goblins_greed_Lore"							"While it is not a mountain, Razzil has mastered the conversion of smaller compounds to line his pockets."
		"DOTA_Tooltip_ability_alchemist_goblins_greed_Note0"						"Does not work against illusions and buildings."
		"DOTA_Tooltip_ability_alchemist_goblins_greed_Note1"						"Each stack of Greevil's Greed has its own duration. They do not get refreshed."
		"DOTA_Tooltip_ability_alchemist_goblins_greed_Note2"						"Gold earned through Greevil's Greed is unreliable gold."
		"DOTA_Tooltip_ability_alchemist_goblins_greed_duration"						"RECENT KILL WINDOW:"
		"DOTA_Tooltip_ability_alchemist_goblins_greed_bonus_gold"					"BASE BONUS GOLD:"
		"DOTA_Tooltip_ability_alchemist_goblins_greed_bonus_bonus_gold"				"EXTRA BONUS GOLD:"		
		"DOTA_Tooltip_ability_alchemist_goblins_greed_bonus_gold_cap"				"MAX BONUS GOLD PER KILL:"
		"DOTA_Tooltip_ability_alchemist_goblins_greed_bounty_multiplier_tooltip"    "BOUNTY RUNE MULTIPLIER:"
		"DOTA_Tooltip_ability_alchemist_chemical_rage"								"Chemical Rage"
		"DOTA_Tooltip_ability_alchemist_chemical_rage_Description"					"Alchemist causes his Ogre to enter a chemically induced rage, reducing base attack cooldown and increasing movement speed and regeneration."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_aghanim_description"		    "Alchemist melts down Aghanim's Scepter to grant an allied hero all Aghanim's Scepter upgrades."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_Lore"							"The brew Razzil gave to the Ogre during their prison bust has become a useful potion in the midst of combat."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_Note0"						"Has a 0.35 second transformation time."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_Note1"						"Disjoints projectiles upon cast."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_Note2"						"Illusions created during Chemical Rage copy the Chemical Rage buff."
		"DOTA_Tooltip_ability_alchemist_chemical_rage_duration"						"DURATION:"
		"DOTA_Tooltip_ability_alchemist_chemical_rage_base_attack_time"				"BASE ATTACK TIME:"
		"DOTA_Tooltip_ability_alchemist_chemical_rage_bonus_health_regen"			"BONUS HEALTH REGEN:"
		"DOTA_Tooltip_ability_alchemist_chemical_rage_bonus_mana_regen"				"BONUS MANA REGEN:"
		"DOTA_Tooltip_ability_alchemist_chemical_rage_bonus_movespeed"				"BONUS MOVE SPEED:"
		"npc_dota_hero_alchemist_bio"												"The sacred science of Chymistry was a Darkbrew family tradition, but no Darkbrew had ever shown the kind of creativity, ambition, and recklessness of young Razzil. However, when adulthood came calling he pushed aside the family trade to try his hand at manufacturing gold through Alchemy. In an act of audacity befitting his reputation, Razzil announced he would transmute an entire mountain into gold. Following two decades of research and spending and preparation, he failed spectacularly, quickly finding himself imprisoned for the widespread destruction his experiment wrought. Yet Razzil was never one to take a setback lightly, and sought escape to continue his research. When his new cellmate turned out to be a fierce ogre, he found just the opportunity he needed. After convincing the ogre not to eat him, Razzil set about carefully concocting a tincture for it to drink, made from the moulds and mosses growing in the prison stone work. In a week's time, it seemed ready. When the ogre drank the potion, it flew into an unstoppable berserker rage, destroying the cell bars and exploding through walls and guards alike. They soon found themselves lost somewhere in the forest surrounding the city with a trail of wreckage in their wake and no signs of pursuit.  In the tonic's afterglow, the ogre seemed serene, happy, and even eager. Resolving to work together, the pair set off to collect the materials needed to attempt Razzil's Alchemic transmutation once more."


Code:
"DOTA_Tooltip_modifier_alchemist_goblins_greed_Description"			"Grants bonus gold upon killing units."