hi i need using with s can some one help if needed heres my army list:

1 devorstator squad
2 tactical squads
1 chaplain in terminator armour
and 1 landraider redeemer

A little more understanding of weapon load outs & points brackets would be useful...

However, first impressions is that it looks odd.

You have a choppy HQ which makes other choppy things choppier, but don't have any choppy things to go with him. Due to the lack of choppy things, the LRR looks kind of pointless...

Can't really comment more without more detail...

How many points are you using?

im using
240 | land raider
175 | devorstators
180 | tactical squads
100 | chaplain

what weapons/wargear with the dev and tac squads?

We'll give you all the help we can, but you have to give is a clue of where to start.
Do you need help with an army list? If so, tell us what you are fielding and be as specific as possible.
Do you need help with land raider tactics in general?
Do you need help with army tactics in general?
Do you have a specific army or tactical question in mind?
Just let us know. You will find a very knowledgable, helpful group here, but we need to know what you want.
Cheers! TW

Well that landraider is ideal for delivering a squad into the enemy. With the stuff you have I'd load up the raider with a tactical squad armed with a flamer or melta gun, join the chaplain to it and roll into the enemy lines. They can use the special weapon then assault, the tacticals using pistol and cc weapons. This unit could be used to grab an objective from the enemy. The other tactical squad should be used to sit on an objective in your deployment zone and support fire your advance group with bolters and a suitable heavy weapon. The devastors should do their stuff depending on what weapons you've given them. I wouldn't mix up their weapons though. Stick with all heavy bolters or all missile launchers for example.