Challenge-V 465, 468, 469 and 470 have been modified

[LaserDucky]

============= TO ALL =============
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To get rid of a shortcuts, the following levels have been modified
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Challenge-V_0465
Several modifications, too many changes to list.

(MOD: 1)
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Challenge-V_0468
Up Antitank at B2

(MOD: 1)
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Challenge-V_0469
Ground at B13 & C13

(MOD: 1)
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Challenge-V_0470
Water at H1 & I1
Ground from C2 to H2

(MOD: 1)
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Donald
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*********** WARNING for USERS of LTUpdate.exe PROGRAM. ***********
Running the LaserTank Update: Levels, High Scores and Playback Files program (LTUpdate.exe) on the next monthly update will delete your High Score(s) (if any) for this (these) level(s). To avoid losing this (these) High Score(s), you should record your solution(s) and save the Playback file(s) to a temporary folder. After you run the LTUpdate.exe program you can copy this (these) recording(s) [Playback file(s)] back to your LaserTank folder, and use it (them) to restore your High Score(s) for this (these) modified level(s).
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