The Warriors
Notice that I finished ALL bonus missions and achieved every level high score while playing, but I left out the exercising in the Hangout, which is worth 2 bonus objectives. If you do exactly what I do in this walkthrough, you will reach 100%, just as long as you also finish all 10 levels of all 4 types of exercising.
Armies of the Night doesn't seem to be a part of 100% completion, but beating it does unlock a few things.
For more info on the game, check out MY WARRIORS GAME WEBSITE.

01. New Blood - A
01. New Blood - B-C
02. Real Live Bunch - A-D
03. Payback A-C
03. Payback - D-E
04. Blackout - A-B
04. Blackout - C-E
05. Real Heavy Rep - A
05. Real Heavy Rep - B
05. Real Heavy Rep - C-D
06. Writer's Block - A-B
06. Writer's Block - C
06. Writer's Block - D-E
07. Adios Amigo - A
07. Adios Amigo - B-C
07. Adios Amigo - D
08. Encore - A
08. Encore - B-E
09. Payin' The Cost - A-B
09. Payin' The Cost - C-D
10. Destroyed - A
10. Destroyed - B-C
10. Destroyed - D-F
11. Boys In Blue - A-C
11. Boys In Blue - D-E
11. Boys In Blue - F
12. Set Up - A1
12. Set Up - A2
12. Set Up - A3
12. Set Up - B-C
13. All-City - A
13. All-City - B1
13. All-City - B2
13. All-City - C
14. The Meeting
14. Desperate Dudes - A-C
14. Desperate Dudes - D
14. Desperate Dudes - E
14. Desperate Dudes - F-G
15. No Permits, No Parley - A
15. No Permits, No Parley - B-C1
15. No Permits, No Parley - C2
15. No Permits, No Parley - C3
16. Home Run - A-D
16. Home Run - E
17. Friendly Faces - A-C
18. Come Out To Play - A-C1
18. Come Out To Play - C2, End & Credits
A. Roots - A
A. Roots - B
A. Roots - C-D
B. The Best - A
B. The Best - B-C
C. Heavy Muscle - A-C
C. Heavy Muscle - D-E
C. Heavy Muscle - F
D. Scout's Honor - A
D. Scout's Honor - B
D. Scout's Honor - C-F
E. Sharp Dressed Man - A-B
E. Sharp Dressed Man- C
E. Sharp Dressed Man - D-F

Robbin Hood
Busted
Deal With It
Carny Compassion
Flash Head
Feed The Homeless
Vigilante Justice
Turf Invasion 1
Turf Invasion 2
Turf Invasion 3
Turf Invasion 4
Turf Invasion 5
Turf Invasion 6
Freedom
Flash Point