Vous avez tous probablement remarqué que dans le mode défi, il n'y a pas tous les niveaux du jeu. Et bien en fait, à la base, Valve avait apparemment prévu le mode défis pour tous les niveaux, puis ils auraient enlevé ceux ayant peu d'intérêt, ce qui a donné le mode défi que le grand public connaît. Cependant, vous pouvez récupérer facilement les niveaux retirés. Voici comment faire, étape par étape :

1. Allez dans Local Disk\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2_dlc1
2. Ouvrez le fichier challenge_maplist.txt
3. Supprimez tout le contenu
4. Faites un copier-coller du texte suivant :

"challenge_maps"
{
"sp"
{
"chapter_1"
{ "map" "sp_a1_intro1" "map" "sp_a1_intro2"
"map" "sp_a1_intro3"
"map" "sp_a1_intro4"
"map" "sp_a1_intro5"
"map" "sp_a1_intro6" "map" "sp_a1_intro7" "map" "sp_a1_wakeup"
"map" "sp_a2_intro"
}
"chapter_2"
{ "map" "sp_a2_laser_intro"
"map" "sp_a2_laser_stairs"
"map" "sp_a2_dual_lasers"
"map" "sp_a2_laser_over_goo" "map" "sp_a2_catapult_intro"
"map" "sp_a2_trust_fling"
"map" "sp_a2_pit_flings"
"map" "sp_a2_fizzler_intro"
}
"chapter_3"
{
"map" "sp_a2_sphere_peek"
"map" "sp_a2_ricochet"
"map" "sp_a2_bridge_intro"
"map" "sp_a2_bridge_the_gap"
"map" "sp_a2_turret_intro"
"map" "sp_a2_laser_relays"
"map" "sp_a2_turret_blocker"
"map" "sp_a2_laser_vs_turret"
"map" "sp_a2_pull_the_rug"
}
"chapter_4"
{
"map" "sp_a2_column_blocker"
"map" "sp_a2_laser_chaining"
"map" "sp_a2_triple_laser"
"map" "sp_a2_bts1"
"map" "sp_a2_bts2"
}
"chapter_5"
{
"map" "sp_a2_bts3"
"map" "sp_a2_bts4"
"map" "sp_a2_bts5" "map" "sp_a2_bts6" "map" "sp_a2_core"
}
"chapter_6"
{ "map" "sp_a3_00"
"map" "sp_a3_01"
"map" "sp_a3_03"
"map" "sp_a3_jump_intro"
"map" "sp_a3_bomb_flings"
"map" "sp_a3_crazy_box"
"map" "sp_a3_transition01"
}
"chapter_7"
{
"map" "sp_a3_speed_ramp"
"map" "sp_a3_speed_flings"
"map" "sp_a3_portal_intro"
"map" "sp_a3_end"
}
"chapter_8"
{
"map" "sp_a4_intro"
"map" "sp_a4_tb_intro"
"map" "sp_a4_tb_trust_drop"
"map" "sp_a4_tb_wall_button"
"map" "sp_a4_tb_polarity"
"map" "sp_a4_tb_catch"
"map" "sp_a4_stop_the_box"
"map" "sp_a4_laser_catapult"
"map" "sp_a4_laser_platform"
"map" "sp_a4_speed_tb_catch"
"map" "sp_a4_jump_polarity"
}
"chapter_9" { "map" "sp_a4_finale1"
"map" "sp_a4_finale2"
"map" "sp_a4_finale3"
"map" "sp_a4_finale4"
}
}
"coop"
{
"chapter_1"
{
"map" "mp_coop_doors"
"map" "mp_coop_race_2"
"map" "mp_coop_laser_2"
"map" "mp_coop_rat_maze"
"map" "mp_coop_laser_crusher"
"map" "mp_coop_teambts"
}
"chapter_2"
{
"map" "mp_coop_fling_3"
"map" "mp_coop_infinifling_train"
"map" "mp_coop_come_along"
"map" "mp_coop_fling_1"
"map" "mp_coop_catapult_1"
"map" "mp_coop_multifling_1"
"map" "mp_coop_fling_crushers"
"map" "mp_coop_fan"
}
"chapter_3"
{
"map" "mp_coop_wall_intro"
"map" "mp_coop_wall_2"
"map" "mp_coop_catapult_wall_intro"
"map" "mp_coop_wall_block"
"map" "mp_coop_catapult_2"
"map" "mp_coop_turret_walls"
"map" "mp_coop_turret_ball"
"map" "mp_coop_wall_5"
}
"chapter_4"
{
"map" "mp_coop_tbeam_redirect"
"map" "mp_coop_tbeam_drill"
"map" "mp_coop_tbeam_catch_grind_1"
"map" "mp_coop_tbeam_laser_1"
"map" "mp_coop_tbeam_polarity"
"map" "mp_coop_tbeam_polarity2"
"map" "mp_coop_tbeam_polarity3"
"map" "mp_coop_tbeam_maze"
"map" "mp_coop_tbeam_end"
}
"chapter_5"
{
"map" "mp_coop_paint_come_along"
"map" "mp_coop_paint_redirect"
"map" "mp_coop_paint_bridge"
"map" "mp_coop_paint_walljumps"
"map" "mp_coop_paint_speed_fling"
"map" "mp_coop_paint_red_racer"
"map" "mp_coop_paint_speed_catch"
"map" "mp_coop_paint_longjump_intro"
}
"chapter_6"
{
"map" "mp_coop_separation_1"
"map" "mp_coop_tripleaxis"
"map" "mp_coop_catapult_catch"
"map" "mp_coop_2paints_1bridge"
"map" "mp_coop_paint_conversion"
"map" "mp_coop_bridge_catch"
"map" "mp_coop_laser_tbeam"
"map" "mp_coop_paint_rat_maze"
"map" "mp_coop_paint_crazy_box"
}
}
}

Et sauvegardez les données du fichier, bien évidemment.

Voici la liste des niveaux à présent ajoutés :

• Chapitre 1
• • Voyage en Container
  • Manège de Portal
  • Panneau Secret
  • Réveil

• Chapitre 2
• • Intro Laser
  • Intro Catapulte

• Chapitre 5
• • Dans les Tubes
  • Coeur

• Chapitre 6
• • Longue Chute

• Chapitre 8
• • Test

• Chapitre 9
• • 1ère Finale