Halo 2
41 Achievements
1,000
Rainman
Play every available game variant, with at least 3 other players, to the end of each game
25
How to unlock the Rainman achievement in Halo 2 - Definitive Guide
You need a total of four people minimum for this achievement. Work on this and "Violent Cartographer" at the same time. For this you need to play every game and variant possible. Each game type has a few variants inside that need to be played as well. That means you can't just play one type of King of the Hill, you need to play all of them. Same with every other game type. Set the time or kills needed to the lowest possible, then finish the match and change the game/map as needed. Everyone but the party leader can go AFK during this and that person will need to win the matches and control the changing of the games/maps.
Slayer
- Slayer
- Team Slayer
- Rockets
- Swords
- Snipers
- Phantoms
- Team Phantoms
- Elimination
- Phantom Elimination
King of the Hill
- King
- Team King
- Phantom King
- Crazy King
- Team Crazy King
Oddball
- Oddball
- Rocketball
- Swordball
- Team Ball
- Low Ball
- Fiesta
Juggernaut
- 2 on 1
- 3 on 1
- Ninjanaut
- Phantom Fodder
- Dreadnaut
Capture the Flag
- Multi Flag CTF
- CTF Classic
- 1 Flag CTF
- 1 Flag CTF Fast
Assault
- Multi Bomb
- Single Bomb
- Single Bomb Fast
- Neutral Bomb
- Blast Resort
Territories
- 3 Plots
- Land Grab
- Gold Rush
- Control Issues
- Contention
Credits: Dead Like Me for the list.
Do this achievement at the same time as Violent Cartographer.
To achieve this, you need to play a full match in each player mode. Each mode has several variations that you also need to play.