SRW OG - Secret Units, Weapons and Items

Name How to Obtain
Valcion Custom Obtain the Battle Mastery on stage 28. You'll recieve it after the stage. Can be obtained on either Ryuusei or Kyosuke route.
Guarlion On Stage 24, have either Rai or Tasuku destroy Leona's Guarlion. You'll recieve it after the stage. Leona will join even if you do not meet this requirement.
Gespenst R Exclusive to Kyosuke route.
Have Gilliam be level 23 or higher by the end of stage 20.
Gilliam will arrive in it as a player reinforcement during stage 31 - as well obtaining the Gespenst Mk-II R which he normally appears in after the stage.
Gespenst Mk-II S Exclusive to Ryuusei route.
On stage 30, destroy the R-Gun. You'll recieve this on scenario 40.
Huckebein 008L Kyosuke Route: Have Viletta be level 23 or higher by the end of stage 20. Destroy the R-GUN on stage 30. You will recieve it as a reinforcement on stage 37.
Ryuusei Route: Have Ingram be level 32 or higher by the end of stage 29. Ring will appear with it at the beginning of stage 37.
OMG! WTF!?: Note that while you keep the Huckebein, you don't get to keep Ring, cause Ring hates you and your little dog too.
Grungast Fail to obtain the Huckebein 008L. Ring (Ryuusei Route) or Viletta (Kyosuke Route) will arrive in it on stage 37.
Also, whilst Ring will appear in this unit on Ryuusei route, you do not get to keep it. It's usable for one mission only, and only keepable on Kyosuke's route.
Shishioh Blade By the end of stage 26, you must have over 23 battle masteries. In addition...
Kyosuke Route: Kyosuke's kill total must be over 70
Ryuusei Route: Ryuusei's kill total must be over 50
If these requirements are met, you'll obtain it after the stage.
Graviton Launcher By the end of stage 31, you must have over 29 battle masteries, and in addition...
Kyosuke Route: Ryuusei must never have piloted Alteisen, Weissritter or the Huckebein Mk-II, and must have a total kill count of over 55.
Ryuusei Route: Kyosuke must never have piloted the Huckebein Mk-II, and must have a total kill count of over 55.
If these requirements are met, you'll obtain it after the stage.
Hero's Mark By the end of scenario 34, you must have over 24 battle masteries, and in addition...
Kyosuke Route: Lefina's level must be 35 or higher
Ryuusei Route: Daitetsu's level must be 35 or higher
If these requirements are met, you'll obtain it after the stage.
Steel Soul By the end of scenario 37, you must have over 30 battle masteries, and in addition...
Kyosuke Route: Daitetsu's level must be 38 or higher
Ryuusei Route: Lefina's level must be 38 or higher
If these requirements are met, you'll obtain it after the stage.