2) The Train will move from the south end of the board, along a pre-determined path, to the North end of the board. The train consists of several hexes worth of attached "cars". Each "Car" is targeted independently, and will remain attached to all other cars, even if destroyed (destroying a Car which is not the engine car will not derail the entire train). The leadmost car is considered the "Engine" car. The train has 4 MP on Turns 1 & 2, 5 MP on Turns 3-8, and 6 MP on turns 9+ (as it accelerates).
Does this mean that each car is 1 hex long, or does a hex contain multiple cars?
Each car is 1 hex long.
3) OPFOR units may leave the train at any time, by spending 2 Jumping MP and passing a PSR with a +1 modifier (in addition to all other modifiers). A Mech Car may contain up to 6 Mechs. OPFOR Mechs firing from the train suffer a +3 to hit modifier, and impose a +1 penalty to attempts to hit them (they are not counted as being stationary). A Mech car has a flat armor value of approximately 70, and the destruction of a mech car will immediately dismount all Mechs on board that car (count as 2-level fall) in the adjacent hexes, displacing as normal.
OPFOR units with zero jumping MP may not leave the train? Would an OPFOR mech that fails it's PSR take falling and skidding damage?
OPFOR Mechs without Jump MP may not leave the train (technically, they may not leave it while it's in motion, and on the elevated track system, but since that's basically the whole game, I'm not concerned about it) period.
For purposes of simplicity, Mechs that fail their dismounting PSR (or Mechs which are dismounted) simply fall 2 levels. No skidding (plus, then we get into overlapping vectors, skidding units accidentally ramming each other...I'd like to just play the game).
Objectives
1) Stop the entire Train from leaving the board
2) Do not destroy the Engine Car or the rail line itself
3) Destroy enemy units
I'm unclear on how we could possibly accomplish the first objective, without destroying the Engine, derailing the train, or causing damage to the track. Is it possible you meant to say "1) Stop the Nuke from leaving the board"?
Or perhaps it's simply not possible to fulfill objective 1 and 2?
Shit, yes. Stop the NUKE from leaving the dammed board. *facepalm*
Also, are we allowed to deploy hidden units?
No, you'll be moving onto the board.