Do I have to enter A to move left, D to move right and W to jump manually or is there a easier way?
If you are using the Platform Behavior or 8-Direction Behavior then the default controls are only the arrow keys. But you can turn them off and replace them using the keyboard plugin.
The answer to your question is "no". I don't know what's complicated about doing it manually.
The events are simple: (8-Direction Behavior)
*When Key "W" is down -- then
--> Player Simulate control "Up"
*When Key "S" is down -- then
--> Player Simulate control "Down"
*When Key "A" is down -- then
--> Player Simulate control "Left"
*When Key "D" is down -- then
--> Player Simulate control "Right"
The events are simple: (Platform Behavior)
*When Key "W" is down -- then
--> Player Simulate control "Jump"
*When Key "S" is down -- then
--> Player (Fall Through)
*When Key "A" is down -- then
--> Player Simulate control "Left"
*When Key "D" is down -- then
--> Player Simulate control "Right"