Here is the full list of all 111 Secret Ponchos achievements.
Kill 3 enemies without dying in a round
Get 75% accuracy in a match (Phantom Poncho)
Get the first kill in a match
Get 250 bounty in one match
Max any perk skill bar
Early Access Player
Play a rookie match wih AI bots
Played 10 matches
Win a match after losing 5 matches
Win 100 Deathmatches
Win 100 Domination matches
Defeat an enemy 3 levels or higher
Win 1,000 matches
Win 20 matches in a row
Win a solo Deathmatch against a player who is in a 10+ win streak
Win 10,000 matches
Deal 50+ % of the damage to a victim before he dies
Kill the last enemy in a team Deathmatch battle
Kill a player who is in a kill streak
Deal 1,500+ damage in a match
Kill 5 enemies without dying in a round
Kill 10 enemies without dying in a round
Deliver the killing shot on all enemies in a team match without taking any damage
Kill 100,000 outlaws
Level up for the first time
Level up to Outlaw
Level up to Legend
Level up 5 unique outlaws to Outlaw
Level up to Deathbringer
Get 5,000 bounty in one match
Get 1,000,000 bounty
Level up 5 unique outlaws to Deathbringer
Win a rank match
Win 100 rank matches
Played 50 rank matches
Have a 10 game winning streak in rank matches
Reach Bronze Tier
Reach Silver Tier
Reach to Gold Tier
Reach to Elite Tier
Reach Master Tier
Reach Master Top 20
Level to Outlaw (Phantom Poncho)
Kill 1 opponent during secondary evade in a match (Phantom Poncho)
Level to Legend (Phantom Poncho)
Disarm each of the enemies using Rattle Bite in a team deathmatch (Phantom Poncho)
Kill 3 opponent with Lead Hammer in a match (Phantom Poncho)
Deal 80% of total team damage (Phantom Poncho)
Killing 2 enemies within 10 seconds of your first kill in a team match (Phantom Poncho)
Level to Deathbringer (Phantom Poncho)
Kill 10,000 enemies (Phantom Poncho)
Level to Outlaw (Killer)
Kill an opponent with Knife Throw in a match (Killer)
Level to Legend (Killer)
Kill an enemy with a Knife Slash (Killer)
Kill an enemy with Fan The Hammer (Killer)
Get 90% accuracy in a match (Killer)
Deal 80% of total team damage (Killer)
Receive less than 10% of damage dealt in a match (Killer)
Level to Deathbringer (Killer)
Kill 10,000 enemies (Killer)
Level to Outlaw (Kid Red)
Kill an opponent with dynamite (Kid Red)
Level to Legend (Kid Red)
Kill an enemy with Devil In Your Pocket (Kid Red)
Stun 10 enemies in a match (Kid Red)
Get 70% accuracy in a match (Kid Red)
Deal 80% of total team damage (Kid Red)
Kill 2 or more enemies with one explosion (Kid Red)
Level to Deathbringer (Kid Red)
Kill 10,000 enemies (Kid Red)
Level to Outlaw (Deserter)
Kill an enemy with Snipe Shot in a match (Deserter)
Level to Legend (Deserter)
Kill an enemy while in adrendline state (Deserter)
Kill an enemy with the impale combo (Deserter)
Get 90% accuracy in a match (Deserter)
Receive 70% of total team damage in a match with at least as many kills as deaths (Deserter)
Heal over 1,000 HP with all your allies alive at the end of the match (Deserter)
Level to Deathbringer (Deserter)
Kill 10,000 enemies (Deserter)
Level to Outlaw (Matador)
Kill an enemy with the Sword Slash (Matador)
Level to Legend (Matador)
Blind 10 enemies in a match with Dust Storm (Matador)
Successfully pounce 5 times (Matador)
Get 90% accuracy in a match (Matador)
Deal 80% of total team damage (Matador)
Kill 3 or more enemies with an execution in a team match (Matador)
Level to Deathbringer (Matador)
Kill 10,000 enemies (Matador)
Level to Outlaw (The Wolf)
Perform 5 roll-shot critical hits in a match (The Wolf)
Level to Legend (The Wolf)
Perform 5 special stuns or wounds in a match (The Wolf)
Kill an enemy with a wolf pounce (The Wolf)
Get 90% accuracy in a match (The Wolf)
Deal 80% of total team damage (The Wolf)
Kill every enemy with a critical shot in a team match (The Wolf)
Level to Deathbringer (The Wolf)
Kill 10,000 enemies (The Wolf)
Level to Outlaw (Gordo)
Use "Gordo Slam" to knock an enemy out of cover (Gordo)
Level to Legend (Gordo)
Hit more than 2 enemies with a molotov explosion (Gordo)
Killing an enemiy with a molotov explosion (Gordo)
Get 60% accuracy in a match (Gordo)
Deal 80% of total team damage (Gordo)
Killing 2 enemies within 5 seconds of the first in a team match (Gordo)
Level to Deathbringer (Gordo)
Kill 10,000 enemies (Gordo)