Bem, eu encontrei uma solução
Podemos usar esta consulta com RSM da seguinte forma
"Usman é basicamente o nome e a classe da tabela"
$rsm = new ResultSetMapping();
$rsm->addEntityResult('Usmans', 'u');
$rsm->addFieldResult('u', 'orderid', 'orderid');
$rsm->addFieldResult('u', 'tutorialId', 'tutorialid');
$rsm->addFieldResult('u', 'points', 'points');
$query = $this->Doctrine->createNativeQuery('SELECT * FROM usman', $rsm);
$tutorial_tests = $query->getResult();
E podemos usar sem ORM como
$testQuery = "
select * from (
select orderid,
tutorialId,
points,
allow_multiple,
question,
answer1,
image1,
correct1,
answer2,
image2,
correct2,
answer3,
image3,
correct3,
answer4,
image4,
correct4,
answer5,
image5,
correct5,
'1' as istest,
'' as content,
'' as media,
'' as media_type_id
from tutorial_test
union
select orderid,
tutorialId,
'0' as istest,
content,
media,
media_type_id,
'' as points,
'' as allow_multiple,
'' as question,
'' as answer1,
'' as image1,
'' as correct1,
'' as answer2,
'' as image2,
'' as correct2,
'' as answer3,
'' as image3,
'' as correct3,
'' as answer4,
'' as image4,
'' as correct4,
'' as answer5,
'' as image5,
'' as correct5
from tutorial_elements
) a
where a. tutorialId = $tutorial_id
order by orderid asc
";
$resultSets = $this->Doctrine->getConnection()->fetchAll($testQuery);
