Just turn down the volume gradually using a variable and when its muted stop it.

Great example!! Thanx for sharing. Good luck with the game!

Here is a basic example:

https://mega.co.nz/#!PAcnnLxC!Uofb7jDUS ... qOUupRMbvI

Platform behavior and Physics dont work together. If you want the player to Jump and at the same time move to the right or left, use the "Set Vector X" option from the platform behavior. A negative number moves it to the left, a positive one moves it to the right.

Here you have an example

https://mega.co.nz/#!GM1hESqY!2REXtu1-e ... l_E1T6k534

The grenade uses bullet behavior, wich has a gravity setting you can tweak to make bullets fall and simulate grenades.

Here I have an example:

https://mega.co.nz/#!zAcRCJhY!CHg4xVYiS ... h_eehqNJKg

Basically, you are forgetting to increase the player Max Speed, so no matter how big is the number you type on vector x, the player wont move faster then his normal speed.

Instead of bullet behavior, give it the platform behavior and set desceleration to 0 so it doesnt stop. The bouncing against solids should be prety easy to implement (i.e. Shell has wall to left >set vector x to 300. Shell has wall to right >set vector x to -300.)

Edit//

Here you have an example capx.

https://mega.co.nz/#!zFk1xJzK!SnAupG3uG ... CgcoV7eAD0

The layout must be larger than the window for the scroll to happen. Like you said make the layout bigger and it will work.

Joannesalfa Well, in 2D games there is no "real" jump. In the platform behavior the sprite just moves on the Y axis and the same does the animation in this example. If you have a GOOD animation, not like mine, you wont notice the difference IMO.

I made a basic example

https://copy.com/ll2Efqijs0qj

Its a sprite with 8 direction behavior and another with animations pinned to it like LitteStain suggested.

If you use physics the events wont be the same. Physics is better because its a behavior dedicated to what you want to do in the game, simulate the bullet physics, but if you arent familiar with it and you dont have the time to read tutorials, just keep the example I made for you and try to improve it.

Nice one, felt like I was playing an atari 2600 game XD Love those old games. I would suggest you to change the controls scheme. Mouse control would be better for this type of game IMO or at least something like the binding of Isaac where the direction you are moving and where are you shooting at are independent.