Here is the full list of all 35 Tower Wars achievements.
Play all 3 Classic Challenges.
Play a match against every bot.
Defeat all bots in matches.
Defeat six different bots in matches.
Complete the tutorial.
Play a match against a bot.
Defeat a bot in a match.
Defeat three different bots in matches.
Defeat [SVS] blea or someone who has defeated [SVS] blea in a ranked match.
Defeat a Tower Wars developer in a ranked match.
Defeat [SVS] Alter-Nate or someone who has defeated Alter-Nate in a ranked match.
Build 10,000 towers in ranked matches.
Send 10,000 units in ranked matches.
Send a full unit wave of Minstrels.
Place 3 Lava Towers in a ranked match.
Win a ranked match by only sending Mr. Moopsys.
Send a wave containing all unit types.
Win a game with at least one Mortimer the Malevolent attacking the enemy castle in a ranked match.
With or without teammates, attack a single unit with every tower type in a ranked match.
With or without teammates, steer an enemy unit through 16 hexes affected by Cyclonic Momentum Decelerators in a row.
Build the ultimate long-range weapon in a ranked match.
Play a co-op game with a buddy or two.
Successfully defend your castle in a co-op game.
Submit a mod to the Tower Wars Steam Workshop.
Play a mod with someone from your friends list.
Achieve a 4 star rating for a mod you submitted.
Achieve a player score of at least 1200 in the original leaderboards before the reset.
Achieve a player score of at least 1150 in the leaderboards before the official seasons begin.
Rank in the top 100 at the end of any Tower Wars Season.
Rank in the top 50 at the end of any Tower Wars Season.
Rank in the top 10 at the end of any Tower Wars Season.
Rank in the top 5 at the end of any Tower Wars Season.
Rank #1 at the end of any Tower Wars Season.